Development of New Hybrid-Type Thermoelectric Element : Synthesis of Host Phase Ceramics with a High Seebeck Coefficient(Part 2)
廣田 健; 奥村 尊; 加藤 将樹
同志社大学理工学研究報告, 同志社大学理工学研究所, 55(4) 3 - 8, Jan. 2015
スピネル型(Fe,Mn)Al₂O₄系フェライトのパルス通電加圧焼結と物性評価 (特集 エネルギー・環境応用のための磁性材料の高性能化)
植田 将弘; 加藤 将樹; 廣田 健
粉体および粉末冶金 : 粉体粉末冶金協会誌, 粉体粉末冶金協会, 61(4) 171 - 178, Apr. 2014
Development of New Hybrid-type Thermoelectric Element : Synthesis of a Host Phase with a High Seebeck Coefficient
廣田 健; 奥村 尊; 加藤 将樹
同志社大学理工学研究報告, 同志社大学理工学研究所, 54(4) 49 - 54, Jan. 2014
26aPS-33 Magnetic properties of Fe-based eta-carbide nitride
Ando Takuya; Waki Takeshi; Tabata Yoshikazu; Kato Masaki; Hirota Ken; Nakamura Hiroyuki
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 68(1) 506 - 506, 26 Mar. 2013
Synthesis f new antibacterial ZnO powders by hydrothermal treatment and their characterization
松岡 翔; 加藤 将樹; 廣田 健
The Science and engineering review of Doshisha University, 同志社大学理工学研究所, 51(4) 24 - 29, Jan. 2011
Simultaneous synthesis and sintering of Al2O3/TiN composites using capsule-free N2-HIPing from Al2O3 and fine Ti mixed powder compacts
矢倉 孟; 高岡 勝哉; 加藤 将樹
The Science and engineering review of Doshisha University, 同志社大学理工学研究所, 51(4) 89 - 94, Jan. 2011
410 Sintering of ZrO_2/25mol%Al_2O_3 solid solution ceramics at 1GPa
HIROTA Ken; SATO Hideyuki; KATO Masaki
学術講演会講演論文集, 日本材料学会, 60 231 - 232, 2011
25aWL-2 Synthesis and Physical Properties of η-Carbide-Type Compounds
Waki T.; Terazawa S.; Tabata Y.; Murase Y.; Kato M.; Hirota K.; Nakamura H.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 65(2) 392 - 392, 18 Aug. 2010
23pWP-8 High Field ESR Measurements of Bond Alternating Chain System Pb2_V_3O_3 using FIR Laser
Okubo S.; Kondo K.; Hino S.; Sakurai T.; Ohta H.; Fujisawa M.; Nanami K.; Michioka C.; Kato M.; Wake T.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 65(2) 372 - 372, 18 Aug. 2010
407 Preparation of ZnO Nano Powder with Antivacterial Activity by Hydrothermal Treatment
MATSUOKA Sho; KATO Masaki; HIROTA Ken
学術講演会講演論文集, 日本材料学会, 59 117 - 118, 2010
26aQJ-4 Study of CuSb_<2-x>Ta_xO_6 by neutron scattering experiments II
Nishi M.; Kato M.; Hirota K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 64(2) 354 - 354, 18 Aug. 2009
25pQJ-11 High Field ESR Measurements on Spring Crystal of Bond Alternating Chain System Pb_2V_3O_9 II
Okubo S.; Kondo K.; Hino S.; Fujisawa M.; Sakurai T.; Ohta H.; Wake T.; Morimoto Y.; Michioka C.; Kato M.; Yoshimura K.; Sugawara N.; Kawamata T.; Koike Y.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 64(2) 332 - 332, 18 Aug. 2009
Nano-composites dispersed with carbon nanofibers (CNFs) with high strength and high electrical conductivity (JCOM-38 プログラム--材料・構造の複合化と機能化に関するシンポジウム)
廣田 健; 加藤 将樹
JCOM講演論文集, [日本材料学会], 38 257 - 260, 10 Mar. 2009
20pQH-17 Study of CuSb_<2-x>Ta_xO_6 by neutron scattering
Nishi M.; Kato M.; Hirota K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 63(2) 371 - 371, 25 Aug. 2008
24aWQ-1 Physical Properties of Pb-Eu Pyrochlore Oxides
Kato M.; Imamura T.; Fukatsu M.; Hirota K.; Michioka C.; Itoh Y.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 63(1) 562 - 562, 29 Feb. 2008
Electrical, thermal and mechanical properties of carbon nanofiber (CNF)-dispersed nanocomposites and precise control of their interfaces (第46回 同志社大学理工学研究所研究発表会 2007年度 同志社大学ハイテク・リサーチ,学術フロンティア合同シンポジウム)
廣田 健; 柴田 忠輝; 加藤 将樹
同志社大学理工学研究報告, 同志社大学理工学研究所, 48(4) 107 - 112, Jan. 2008
21aPS-80 Metal-Insulator Transition of Pyrochlore Oxides Pb_<2-x>Ln_xRu_2O_<7-δ>(Ln=Sm, Eu)
Kato M.; Imamura T.; Fukatsu M.; Tani Y.; Hirota K.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 62(2) 535 - 535, 21 Aug. 2007
Interfaces between carbon nanofiber (CNF) and matrix grains in CNF-dispersed composites
Hirota Ken; Shibata Tadateru; Kato Masaki
The science and engineering review of Doshisha University, Doshisha University, 47(4) 54 - 58, Jan. 2007
23aXK-6 High field ESR study of 1D alternating chain system Pb_2V_3O_9 II
Yamamoto H.; Kodama K.; Ohta H.; Okubo S.; Yoshida M.; Waki T.; Morimoto Y.; Michioka C.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61(2) 312 - 312, 18 Aug. 2006
30aUF-3 NMR/NQR measurements on cobaltate superconductor Na_xCoO_2・yH_2O
Ihara Y.; Ishida K.; Takeya H.; Michioka C.; Yoshimura K.; Kato M.; Takada K.; Sasaki T.; Sakurai Y.; Takayama-Muromachi E.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61(1) 649 - 649, 04 Mar. 2006
30aSB-12 Na-Deficiency Effects on Spin-Gapped Layer Compound Na_2Cu_2TeO_6
Morimoto K.; Itoh Y.; Yoshimura K.; Kato M.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61(1) 494 - 494, 04 Mar. 2006
27pSB-9 High field ESR measurement of 1D quantum spin system Pb_2V_3O_9
Ohta H.; Kodama M.; Yoshida M.; Okubo S.; Waki T.; Ito Y.; Morimoto Y.; Michioka C.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61(1) 428 - 428, 04 Mar. 2006
27pPSB-6 Low dimensional magnetism of trirutile-type compound Cu_<1-x>Co_xSb_2O_6
Nakamura Y.; Michioka C.; Waki T.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61(1) 452 - 452, 04 Mar. 2006
Fabrication of carbon nanofiber(CNF)-dispersed Al2O3 composites by pulsed electric-current pressure sintering and their mechanical properties (別冊 第43回同志社大学理工学研究所研究発表会,2005年度同志社大学ハイテク・リサーチ,学術フロンティア合同シンポジウム講演予稿集〔含 当日配付資料〕)
廣田 健; 高浦 祐一; 加藤 将樹
同志社大学理工学研究報告, 同志社大学理工学研究所, 46(4) 106 - 111, Jan. 2006
21aXD-6 Angle Dependent Knight Shift measurement in Na_xCoO_2・yH_2O
Ihara Y.; Ishida K.; Takeya H.; Michioka C.; Yoshimura K.; Kato M.; Takada K.; Sasaki T.; Sakurai Y.; Takayama-Muromachi E.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60(2) 467 - 467, 19 Aug. 2005
21aYB-5 Chemical and Physical Properties of Layered Bi-Co Oxide Systems
Kato M.; Gto Y.; Umehara K.; Nishimura A.; Nishimura N.; Hirota K.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60(2) 308 - 308, 19 Aug. 2005
24aYP-7 Impurity-induced quantum phase transition in Pb_2V_3O_9
Waki Takeshi; Kato Masaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60(1) 411 - 411, 04 Mar. 2005
25pWF-5 ^<17>O-NMR Measurement in Cobaltate Superconductor Na_xCo^<17>O_2・yH_2O
Ihara Y.; Ishida K.; Michioka C.; Kato M.; Yoshimura K.; Takada K.; Osada M.; Sasaki T.; Sakurai Y.; Takayama-Muromachi E.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60(1) 559 - 559, 04 Mar. 2005
25pWF-4 NMR studies of Na_xCoO_2・yH_2O superconductors and the related compounds
Ohta Hiroto; Michioka Chishiro; Itoh Yutaka; Waki Takeshi; Yoshimura Kazuyoshi; Kato Masaki; Ishida Kenji; Ihara Nobuhiko; Sakurai Yuya; Muromachi Eiji; Takada Kazunori; Sasaki Takayoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60(1) 558 - 558, 04 Mar. 2005
25pWF-3 Multi-NMR Studies of Triangular-Lattice Superconductor Na_xCoO_2・yH_2O
Michioka Chishiro; Ohta Hiroto; Itoh Yutaka; Waki Takeshi; Yoshimura Kazuyoshi; Kato Masaki; Ishida Kenji; Ihara Nobuhiko; Sakurai Hiroya; Muromachi Eiji; Takada Kazunori; Sasaki Takayoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60(1) 558 - 558, 04 Mar. 2005
407 Low-temperature high-pressure sintering of meta-stable γ-Al_2O_3
HIROTA Ken; KURAUCHI Takashi; TAKAOKA Katsuya; KATO Masaki; YAMAGUCHI Osamu
学術講演会講演論文集, 日本材料学会, 54 111 - 112, 2005
406 Fabrication of meta-stable monoclinic zirconia ceramics with a high density using a piston-cylinder type high-pressure apparatus
HIROTA Ken; TAKAOKA Katsuya; KATO Masaki; YAMAGUCHI Osamu; OHTAKA Satoshi
学術講演会講演論文集, 日本材料学会, 54 109 - 110, 2005
13aWG-6 High field ESR study of 1D alternating chain system Pb_2V_3O_9
Kodama M; Yoshida M; Okubo S.; Ohta H.; Waki T.; Morimoto Y.; Michioka C.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(2) 387 - 387, 25 Aug. 2004
13aRC-11 ^2D NMR Studies of Co oxide 2D Triangular Lattice Superconductor Na_<0.35>CoO_2・1.35D_2O
Michioka Chishiro; Waki Takeshi; Kato Masaki; Yoshimura Kazuyoshi; Ishida Kenji; Ihara Nobuhiko; Sakurai Yuya; Muromachi Eiji; Takada Kazunori; Sasaki Takayoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(2) 453 - 453, 25 Aug. 2004
13aRC-12 Anomalous Metallic State in Cobaltate Na_xCoO_2 (x=0.7)
Ihara Y.; Ishida K.; Michioka C.; Kato M.; Yoshimura K.; Takada K.; Sasaki T.; Sakurai Y.; Muromachi E.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(2) 454 - 454, 25 Aug. 2004
28aXL-5 Magnetic properties of ID alternating chain Pb_2V_3O_9
Waki T; Morimoto Y; Michioka C; Kato M; Kageyama H; Yoshimura K; Nakatsuji S; Sakai O; Maeno Y; Mitamura H; Goto T
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(1) 482 - 482, 03 Mar. 2004
28aXC-2 Sample Dependence on Cobaltate Superconductor Na_xCoO_2・yH_2O
Ihara Y.; Ishida K.; Michioka C.; Kato M.; Yoshimura K.; Takada K.; Sasaki T.; Sakurai Y.; Takayama-Muromachi E.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(1) 547 - 547, 03 Mar. 2004
28aXC-5 NMR and NQR Studies of Co oxide 2D Triangular Lattice Superconductor Na_xCoO_2・yH_2O (II)
Michioka Chishiro; Waki Takeshi; Kato Masaki; Yoshimura Kazuyoshi; Ishida Kenji; Ihara Nobuhiko; Sakurai Yuya; Muromachi Eiji; Takada Kazunori; Sasaki Takayoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(1) 547 - 547, 03 Mar. 2004
28aXC-4 NMR and NQR Studie of Co oxide 2D triangular lattice superconductor Na_xCoO_2・yH_2O(I)
Kato M; Michioka C; Waki T; Yoshimura K.; Ishida K; Ihara Y; Sakurai Y.; Takada K; Sasaki T; Takayama-Muromachi E.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(1) 547 - 547, 03 Mar. 2004
27pPSB-6 Low dimensional magnetism of trirutile-type compound CuSb_<2-x>Ta_xO_6
Nakamura Y; Matsumiya M; Kato M; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(1) 473 - 473, 03 Mar. 2004
28aXC-6 NMR and NQR Studies of Co oxide 2D triangular lattice superconductor Na_xCoO_2・yH_2O : Fe doping effects
Waki T; Kato M; Michioka C; Yoshimura K; Ishida K; Ihara Y; Sakurai Y; Takada K.; Sasaki T; Takayama-Muramachi E
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 59(1) 548 - 548, 03 Mar. 2004
Magnetic property in A_2V_3O_9 and the doping effect on A site
Waki Takeshi; Morimoto Yuko; Hayami Arata; Kato Masaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 58(2) 371 - 371, 15 Aug. 2003
^<57>Fe Moessbauer spectroscopy of Jarosite type Compound NaFe_3(SeO_4)_2(OH)_6
Oba N.; Michioka C.; Kato M.; Yoshimura K.; Mibu K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 58(2) 366 - 366, 15 Aug. 2003
High Temperature NMR study on Low-Dimensional Transition Metal Oxide Na_<3-x>Ru_4O_9
Matsumiya M.; Ohno H.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 58(2) 417 - 417, 15 Aug. 2003
NMR Study of Triangular Lattice Superconductor Na_xCoO_2・yH_2O
Michioka Chishiro; Waki Takeshi; Kato Masaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 58(2) 506 - 506, 15 Aug. 2003
29pXF-14 Cu_5V_2O_<10> の磁性
和氣 剛; 森本 裕子; 加藤 将樹; 吉村 一良
日本物理学会講演概要集, 一般社団法人日本物理学会, 58(1) 456 - 456, 06 Mar. 2003
Physical Properties of Low-Dimensional Transition Metal Oxide Na_<3-x>Ru_4O_9 in high temperature
Kato M.; Ohno H.; Sakai H.; Kazuyoshi Y.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 58(1) 425 - 425, 06 Mar. 2003
The synthesis and the physical property of Pb_<2-x>Ca_xIr_2O_7
Oba N.; Ohno H.; Matsumiya M.; Sakai H.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 58(1) 446 - 446, 06 Mar. 2003
High-resolution photoemission study of Cd2Re2O7
A Irizawa; A Higashiya; S Kasai; T Sasabayashi; A Shigemoto; A Sekiyama; S Imada; S Suga; H Sakai; H Ohno; M Kato; K Yoshimura
ACTA PHYSICA POLONICA B, ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS, 34(2) 553 - 556, Feb. 2003
NMR study on YCo_2 single crystal
Onda Daisuke; Waki Takeshi; Kato Masaki; Yoshimura Kazuyoshi; Ietaka Nobuyuki; Mitsuda Akihiro; Ishikawa Yoshikazu
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(2) 357 - 357, 13 Aug. 2002
NMR study on vanadium Hollandites
Waki Takeshi; Morimoto Yuuko; Kato Masaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(2) 340 - 340, 13 Aug. 2002
Synthesis and magnetic properties of Kagome lattice compound AB_3(SO_4)_2(OH)_6
Oba Noriaki; Kato Masaki; Hori Tsutomu; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(2) 365 - 365, 13 Aug. 2002
Physical properties and synthesis in vanadium Hollandites
Morimoto Yuuko; Waki Takeshi; Kato Masaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(2) 341 - 341, 13 Aug. 2002
Synthesis and magnetic properties of LiNbO_2 with 2D-triangular lattice
Ishii T.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(2) 383 - 383, 13 Aug. 2002
Photoemission Study of Pyrochlore Oxide Cd2Re2O7
Irizawa A.; Higashiya A.; Kasai S.; Sasabayashi T.; Shigemoto A.; Sekiyama A.; Imada S.; Suga S.; Sakai H.; Ohno H.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(2) 549 - 549, 13 Aug. 2002
25aXJ-1 Magnetic properties of Kagome lattice compound NaV_3(SO_4)_2(OH)_6
Kato Masaki; Hori Tsutomu; Oba Noriaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 386 - 386, 01 Mar. 2002
24aXJ-8 Temperature-Induced Metal-Insulator Transition in Bi_xV_8O_<16> IV
Waki Takeshi; Morimoto Yuuko; Kato Harukazu; Kato Masaki; Yoshimura Kazuyoshi
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 371 - 371, 01 Mar. 2002
27aXJ-5 Cu NMR study of 1-D Cu chain oxide Ca_<0.85>CuO_2
Yokoyama T.; Yoshimura K.; Mitsui T.; Kato M.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 452 - 452, 01 Mar. 2002
27pYK-5 Anomalous magnetism in pressure-induced metalic V_2O_3
Inoue D.; Mitoh T.; Kornilova A.; Kitaoka Y.; Pudalov V.; Yoshimura K.; Kato M.; Kosuge K.; Ueda Y.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 600 - 600, 01 Mar. 2002
25pYJ-2 The Superconductivity in a pyrochiore oxide Cd_2Re_2O_7 (II)
Sakai H.; Ohno H.; Kato M.; Yoshimura K.; Kato H.; Kambe S.; Walstedt R. E.; Masuda T. D.; Haga Y.; Onuki Y.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 561 - 561, 01 Mar. 2002
25pYJ-7 Photoemission Study of Pyrochiore Oxide Cd_2Re_2O_7
Irizawa A.; Higashiya A.; Kasai S.; Sasabayashi T.; Shigemoto A.; Sekiyama A.; Imada S.; Suga S.; Sakai H.; Ohno H.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 562 - 562, 01 Mar. 2002
25aPS-45 Low dimensional structure and Magnetic properties of Nb oxide
Ishii T.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 57(1) 405 - 405, 01 Mar. 2002
NMR study on low dimensional compound Na_<3-x>Ru_4O_9
Ohno H.; Sakai H.; Kato M.; Yoshimura K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(2) 307 - 307, 03 Sep. 2001
Magnetic properties of CuSb_<2-x>Ta_xO_6
Ishii T.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(2) 306 - 306, 03 Sep. 2001
The physical property of 1D Cu chain oxide Ca_<0.85>CuO_2
Yokoyama T.; Yoshimura K.; Mitsui T.; Kato M.; Kosuge K.; Ishikawa F.; Mitamura H.; Goto T.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(2) 307 - 307, 03 Sep. 2001
NMR study of V_2O_3 under high pressure (IV)
Inoue D.; Mito T.; Kornilov A.; Kitaoka Y; Pudalov V.; Yoshimura K.; Kato M.; Kosuge K.; Ueda Y.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(2) 492 - 492, 03 Sep. 2001
1次元磁性酸化物Ca3CoRhO6の磁場下中性子回折 (「極端条件下における中性子回折・散乱」第3回ワークショップ報告書)
新高 誠司; 加藤 将樹; 吉村 一良
KURRI-KR, 京都大学原子炉実験所, (65) 34 - 39, 13 Mar. 2001
The relation of physical property and hole concentration of 1D Cu chain oxide Ca<1-x>CuO_2
Yokoyama T.; Yoshimura K.; Mitui T.; Kato M.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(1) 395 - 395, 09 Mar. 2001
Magnetizm of some compounds with frustrating chains
Sakurai H.; Kato M.; Yoshimura K.; Kosuge K.; Tsujii N.; Abe H.; Kitazawa H.; Kido G.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(1) 397 - 397, 09 Mar. 2001
Electrical Conductiveity and Magnetic Properties of the Several Ruthenates
Sakai H.; Ohsawa N.; Ohno H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(1) 364 - 364, 09 Mar. 2001
Magnetic structure of CiSb_2O_6
Kato Masaki; Kajimoto Koji; Yoshimura Kazuyoshi; Kosuge Koji; Nishi Masakazu; Kakurai Kazuhisa
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(1) 405 - 405, 09 Mar. 2001
New Quantum-Spin-Oxides Including New Compounds Having M-I Transition
Yoshimura K.; Kato H.; Waki T.; Kawakami Y.; Niitaka S.; Saito Y.; Kato M.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(1) 430 - 430, 09 Mar. 2001
NMR study of V_2O_3 under high pressure (III)
Inoue D.; Mito T.; Kornilov A.; Kitaoka Y.; Pudalov V.; Yoshimura K.; Kato M.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 56(1) 542 - 542, 09 Mar. 2001
CuSb_2O_6の低次元磁性(<特集>低次元量子スピン系(無機系・実験)の最近の展開2)
加藤 将樹; 吉村 一良; 小菅 皓二
物性研究, 物性研究刊行会, 76(4) 504 - 515, 2001
Temperature-Induced Metal-Insulator Transition of Bi_xV_8O_<16>
WAKI Takeshi; KATO Harukazu; KATO Masaki; YOSHIMURA Kazuyoshi; KOSUGE Koji
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, 56(0) 325 - 328, 2001
Magnetic transition of CuSb_2O_6
Kajimoto Koji; Kato Masaki; Yoshimura Kazuyoshi; Kosuge Koji; Michor H.; Hilscher G.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(2) 349 - 349, 10 Sep. 2000
Synthesis and Physical Properties of Cu_3B_2O_6
Sakurai H.; Tsuboi N.; Kato M.; Yoshimura K.; Kosuge K.; Mitsuda A.; Mitamura H.; Goto T.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(2) 348 - 348, 10 Sep. 2000
Magnetic Property of Tl_2Ru_2O_<7-δ>(δ〜0)
Sakai H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(2) 344 - 344, 10 Sep. 2000
Property of Cu_2O crystal synthesized by hydrothermal method
Hori T.; Kato M.; Yoshimura K.; Kosuge K.; Oka Y.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(2) 345 - 345, 10 Sep. 2000
low dimensional magnetism of LiMX_2O_6(M=V,Cr;X=Ge,Si)
KATO Harukazu; KATO Masaki; YOSHIMURA Kazusyoshi; KOSUGE Koji; MITSUDA Akihiro; MITAMURA Hiroyuki; GOTO Tuneaki
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(2) 343 - 343, 10 Sep. 2000
Synthesis and physical propertics of low-dimensional magnets A'_3ABO_6
Niitaka S.; Kageyama H.; Yoshida H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(1) 346 - 346, 10 Mar. 2000
Physical property near the quantum sritical point of YbCu_<5-x>AU_x
Sato N.; Kawabata T.; Yosimura K.; Kato M.; Kosuge K.; Tsujii N.; Terashima T.; Terakura C.; Kido G.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(1) 407 - 407, 10 Mar. 2000
NMR study of V_2O_3 under high pressure
Mito T.; Kornilov A.; Kitaoka Y.; Pudalov V; Yoshimura K; Kato M.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(1) 487 - 487, 10 Mar. 2000
The spin-gapped magnetic behavior of Cu3B2O6
Sakurai H.; Tsuboi N.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(1) 422 - 422, 10 Mar. 2000
Low-dimensional properties of CuSb_2O_6
Kato Masaki; Kajimoto Koji; Hatazaki Akitsugu; Yoshimura Kazuyoshi; Kosuge Koji
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(1) 422 - 422, 10 Mar. 2000
Physical Property of Hole doped 1D Cu chain oxide with spin gap State II
Yoshimura k.; Yokoyama T.; Mitsui T.; Kato M.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 55(1) 338 - 338, 10 Mar. 2000
磁性材料 AV6O11(A=Na,Sr,Pb)の構造と物性
加藤治一; 加藤将樹; 吉村一良; 小菅こう二
粉体粉末冶金協会講演概要集, 2000, 2000
LiMX2O6(M=V,Cr;X=Ge,Si)の低次元磁性
加藤治一; 加藤将樹; 吉村一良; 小菅こう二; 光田暁弘; 三田村弘幸; 後藤恒昭
粉体粉末冶金協会講演概要集, 2000, 2000
24pPSB-49 Synthesis and magnetic properties of new one-dimensional magnets A'_3ABO_6 IV
Niitaka S; Kageyama Y; Kato M; Yoshimura K; Kosuge K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(2) 374 - 374, 03 Sep. 1999
24pPSB-62 Magnetic and electoric properties of AV_6O_<11>(A=Na, Sr, Pb) VI
加藤 治一; 加藤 将樹; 吉村 一良; 小菅 皓二
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(2) 377 - 377, 03 Sep. 1999
25pYQ-13 Nuclear Magnetic Resonance of CuSb_2O_6 II
Kato Masaki; Hatazaki Akitsugu; Yoshimura Kazuyosi; Kosuge Kouji
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(2) 389 - 389, 03 Sep. 1999
24pPSB-47 Physical ptoperty of hole doped ID Cu chain oxside with spin gap state
Yoshimura K; Mitsui T; Kato M; Kosuge K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(2) 373 - 373, 03 Sep. 1999
27pH-5 NMR study of V_2O_3 under high pressure
Mito T; Kornilov A; Kitaoka Y; Pudalov V; Yoshimura K; Kato M; Kosuge K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(2) 582 - 582, 03 Sep. 1999
Magnetic excitations of CuNb2O6
K Kodama; H Harashina; S Sasaki; M Kanada; M Kato; M Sato; K Kakurai; M Nishi
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, PERGAMON-ELSEVIER SCIENCE LTD, 60(8-9) 1129 - 1132, Aug. 1999
29a-F-6 Nuclear Magnetic Resonance of CuSb_2O_6
Kato M.; Hatazaki A.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(1) 418 - 418, 15 Mar. 1999
28a-PS-70 Magnetic and electric propeties of AV_6O_<11>(A=Na, Sr, Pb)V
加藤 治一; 加藤 将樹; 吉村 一良; 小菅 皓二
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(1) 393 - 393, 15 Mar. 1999
29p-PSA-15 Synthesis and magnetic properties of new one-dimensional magnets A'_3ABO_6 III
Niitaka S.; Kageyama H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 54(1) 441 - 441, 15 Mar. 1999
AV6O11(A=Na,Sr,Pb)の構造と物性 V
加藤治一; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集, 54(1), 1999
AV6O11(A=Na,Sr,Pb)の構造と物性 VI
加藤治一; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集, 54(2), 1999
Neutron scattering study on the quasi-one-dimensional spin-gap system CuNb2O6
K Kodama; H Harashina; H Sasaki; M Kato; M Sato; K Kakurai; M Nishi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, PHYSICAL SOC JAPAN, 68(1) 237 - 241, Jan. 1999
ホールをドープしたCu酸化物一次元鎖のスピンギャップ II
吉村一良; 三ツ井哲朗; 辻井直人; 加藤将樹; 小菅こう二
日本物理学会講演概要集, 54(1), 1999
Low Dimensional Magnetic Properties of AB_2O_6 Rutile-type Compounds (A=Co, Ni, Cu, B=Sb, Ta, Nb) II
HATAZAKI A.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 479 - 479, 05 Sep. 1998
Magnetic and electoric propeties of AV_6O_<11>(A=Na, Sr, Pb) IV
加藤 浩一; 加藤 将樹; 吉村 一良; 小蒼 皓二
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 499 - 499, 05 Sep. 1998
NMR Measurements of Gap-like State in Na_XTiO_2
SAKURAI H.; TUJII N.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 500 - 500, 05 Sep. 1998
New Tow-Dimensional Spin Gap System SrCu_2(BO_3)_2 I
KAGEYAMA H.; ONIZUKA K.; UEDA H.; MUSHNIKOV N.V.; GOTO T.; YOSHIMURA K.; KATO M.; KOSUGE K.; STERN R.; SLICHTER C.P.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 548 - 548, 05 Sep. 1998
Synthesls and magnetic properties of new one-dimensional magnets A'_3ABO_6 II
NIITAKA S.; KAGEYAMA H.; KATO M.; YOSHIMURA K.; KOSUGE K.; MITAMURA H.; GOTO T.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 544 - 544, 05 Sep. 1998
Magnetic properties of YbCu_<5-x>Au_x sytem
KAWABATA T.; TSUJII N.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 524 - 524, 05 Sep. 1998
Magnetic and Electrical Properties of Pyrochlore Ruthenate A_2Ru_2O_7III(A=Bi,Pb,Tl,Y,Rare,Earth)
SAKAI H.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 536 - 536, 05 Sep. 1998
Substitution effect on valence transition in Yb_<1-X>Zr_XCu_4In
SORADA K.; TUJII N.; KATO M.; YOSHIMURA K.; KOSUGE K.; MITAMURA H.; GOTO T.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(2) 452 - 452, 05 Sep. 1998
Magnetic and Electrical Properties of Pyrochlore Ruthenates A_2Ru_2O_7(A=Bi,Y,Rare Earth,Tl)
SAKAI H.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(1) 384 - 384, 10 Mar. 1998
Magnetic and electoric propeties of AV_6O_<11>(A=Na,Sr,Pb)III
加藤 治一; 加藤 将樹; 吉村 一良; 小菅 皓二
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(1) 384 - 384, 10 Mar. 1998
Magnetic and Electrical Properties of Titanium Bronze III
SAKURAI H.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(1) 384 - 384, 10 Mar. 1998
Synthesis and magnetic properties of new one-dimensional magnets A'_3ABO_6
NIITAKA S.; KAGEYAMA H.; KATO M.; YOSHIMURA K.; KOSUGE K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(1) 418 - 418, 10 Mar. 1998
Low Dimentional Magnetic Properties of AB_2O_6 Rutile-type Compounds (A=Co,Ni,Cu,B=Sb,Ta,Nb)
KATO M.; ISHIWATA S.; TERASHIMA T.; HATAZAKI A.; YOSHIMURA K.; KOSUGE K.; MITAMURA H.; GOTO T.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 53(1) 431 - 431, 10 Mar. 1998
AV6O11(A=Na,Sr,Pb)の構造と物性 IV
加藤治一; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集, 53(2), 1998
ホールをドープしたCu酸化物一次元鎖のスピンギャップ
吉村一良; 三ツ井哲朗; 辻井直人; 加藤将樹; 小菅こう二
日本物理学会講演概要集, 53(2), 1998
Yb1-xZrxCu4Inの価値転移と置換効果
空田幸一; 辻井直人; 加藤将樹; 吉村一良; 小菅こう二; 三田村裕幸; 後藤恒昭
日本物理学会講演概要集, 53(2), 1998
ギャップ的振る舞いをしめすNaxTiO2(x=0.2~0.25)のNMR
桜井裕也; 辻井直人; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集, 53(2), 1998
YbCu5-xAuxの磁性
川畑隆; 辻井直人; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集, 53(2), 1998
Valence transition in Yb compound, high concentration Kondo effect and magnetization process in strong magnetic field.
辻井直人; 何軍輝; 加藤将樹; 吉村一良; 小菅こう二; 三田村裕幸; 後藤恒昭
物性研だより, 37(6), 1998
5p-PSB-12 Magnetic and Electrical Properties of Titanium Bronze II
Sakurai H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 449 - 449, 16 Sep. 1997
5p-PSB-9 Magnetic and Electrical Properies of R-V-O(R=Lu, Y)III
Tsuda K.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 448 - 448, 16 Sep. 1997
5p-PSB-14 Magnetic Property of A_2NiO_2(A=Li, Na, Rb)
Niitaka S.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 449 - 449, 16 Sep. 1997
5a-YG-9 Magnetic and Electrical Prooperties of Pyrochlore Ruthenates A_2Ru_2O_7(A=Bi, Y, Rare Earth, Tl)
Sakai H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 413 - 413, 16 Sep. 1997
7p-PSA-3 Inter-plane and inter-chain spin correlations in YBa_2Cu_3O_7 and YBa_2Cu_4O_2 systems
Goto A; Shimizu T; Aoki H; Matsumoto T; Kato M; Yoshimura K; Kosuge K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 676 - 676, 16 Sep. 1997
6a-PS-94 Magnetic Properties of EuPd_3B_x(x=0〜1)
Sorada K.; Tujii N.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 498 - 498, 16 Sep. 1997
5a-YG-4 Magnetic and electric properties of AV_6O_<11> II
Kato H.; Kato M.; Yoshimura K.; Kosuge K.; Ikeda Y.; Bando N.; Mitamura H.; Goto T.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(2) 412 - 412, 16 Sep. 1997
31a-W-6 Magnetic and Electrical Properties of Titanium Bronze
Sakurai H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 509 - 509, 17 Mar. 1997
28a-W-5 Cu-NMR study of a single layered high-Tc cuprate oxide Bi_2Sr_2CuO_y(Bi2201)
Goto A.; Shimizu T.; Aoki H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 520 - 520, 17 Mar. 1997
28a-W-2 NMR study of antiferromagnetic states of the Pr123 systems
Shimizu T.; Goto A.; Aoki H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 519 - 519, 17 Mar. 1997
29p-PSA-2 Coulometric Determination of Valences in Metal Ions in YBa_2(Cu_<1-x>T_x)_3O_y(T=Fe, Co and Ni)
Kato M.; Ueda T.; Yoshioka W.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 615 - 615, 17 Mar. 1997
28a-PS-51 Magnetic and Electrical Properties of A-Ru-O(A=Tl, Bi, Y, Yb)II
Sakai H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 416 - 416, 17 Mar. 1997
28a-PS-53 Magnetic and Electrical Properties of R-V-O(R=Lu, Y)II
Tsuda K.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 417 - 417, 17 Mar. 1997
28a-PS-52 Magnetic and Electric Properties of AV_60_<11>
Kato H.; Kato M.; Yoshimura K.; Kosuge K.
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 52(1) 416 - 416, 17 Mar. 1997
Magnetic and electric propeties of AV6O11. II.
加藤治一; 加藤将樹; 吉村一良; 小菅こう二; 池田靖訓; 坂東尚周; 三田村裕幸; 後藤恒昭
日本物理学会講演概要集(分科会), 1997, 1997
Properties of AV6O11(A=Na,Sr,Pb).
加藤治一; 加藤将樹; 吉村一良; 小菅こう二; 三田村裕幸; 後藤恒昭; 池田靖訓; 坂東尚周
粉体粉末冶金協会講演概要集, 1997, 1997
Magnetic and Electric Properties of AV6O11.
加藤治一; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集(年会), 52(1 Pt 3), 1997
Synthesis and characteristics of an oxide superconducting body. Structure and physical properties of AV6O11(A=Na,Sr,Pb). II.
加藤治一; 加藤将樹; 吉村一良; 小菅こう二; 池田靖訓; 坂東尚周; 三田村裕幸; 後藤恒昭
粉体粉末冶金協会講演概要集, 1997, 1997
Synthesis and characteristics of oxide superconductor. Magnetism of EuPd3Bx(0.LEQ.x.LEQ.1).
空田幸一; 辻井直人; 加藤将樹; 吉村一良; 小菅こう二; 後藤恒昭
粉体粉末冶金協会講演概要集, 1997, 1997
Magnetic Properties of EuPd3Bx (x=0-1).
空田幸一; 辻井直人; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集(分科会), 1997, 1997
Crystal structure and magnetism of YbCu5 system.
辻井直人; HE J; 網田富士嗣; 加藤将樹; 吉村一良; 小菅こう二; 後藤恒昭
日本物理学会講演概要集(年会), 52(1 Pt 3), 1997
Magnetic and Electrical Properties of R-V-O(R=Lu, Y)
Tsuda K.; Kato M.; Yoshimura K.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1996(3) 108 - 108, 13 Sep. 1996
Microscopic Characterization and Superconductivity of Y_2Ba_4Cu_7O_y
Kato H.; Kato M.; Yosimura K.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1996(3) 536 - 536, 13 Sep. 1996
Microscopic Characterization of Y2Ba4Cu7O15-.DELTA.-NQR and TEM Investigation.
吉村一良; 加藤将樹; 加藤治一; 大村朋彦; 中西真; 宮野敏男; 垣花真人; 小菅こう二
NMR討論会講演要旨集, 35th, 1996
Magnetic and Electrical Properties of A-Ru-O(A=Tl, Bi, Y, Yb)
KATO M.; Kato M.; Yoshimura K.; Kosuge K.
Physica, C, The Physical Society of Japan (JPS), 266 109 - 114, 1996
Crystal structure and magnetic properties of the Yb-based compounds around YbCu5. II.
辻井直人; HE J; 網田富士嗣; 加藤将樹; 吉村一良; 小菅こう二
日本物理学会講演概要集(分科会), 1996(Autumn Pt 3), 1996
Coulometric determination of Pr valence in the Pr_<1-x>Y_xBa_2Cu_3O_y, Pr_<1+x>Ba_<2-x>Cu_3O_y system
Yoshimura K.; Seimaru K.; Masui Y.; Kato M.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1995(3) 511 - 511, 12 Sep. 1995
Insulating Phase of Bi cuprate System
Kato M.; Yoshimura K.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1995(3) 544 - 544, 12 Sep. 1995
Synthesis and physical properties of high-pressure phase CuV_2S_4
Nakanishi M.; Kato M.; Amita F.; Yoshimura K.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, The Physical Society of Japan (JPS), 50(3) 11 - 11, 16 Mar. 1995
31a-PS-41 Coulometolic Determination of the Average Valence of Pr in PrBa_2Cu_3O_y
Kato Masaki; Saga Nobuhiro; Yoshimura Kazuyoshi; Kosuge Koji
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, The Physical Society of Japan (JPS), 49(3) 463 - 463, 16 Mar. 1994
First Synthesis of Bi2Sr2CaCu2Oy with the Highest Tc of 96 K
M. Kato; K. Yoshimura; K. Kosuge
Journal of Solid State Chemistry, Elsevier BV, 106(2) 514 - 516, Oct. 1993, Report scientific journal
12a-X-2 Composition dependance of physical properties of the La214 system
Kageyama H.; Kato M.; Yoshimura K.; Kosuge K.; Imai T.; Slichter C.P.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1993(3) 307 - 307, 20 Sep. 1993
14p-E-11 Pressure dependence of weak coupling effect in YBa_2Cu_3O_7
Yoshimura K.; Saga N.; Kato M.; Kosuge K.; Takahashi H.; Mohri N.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1993(3) 462 - 462, 20 Sep. 1993
14a-W-4 Synthesis and Physical Properties of Bi2212 phase with the stoichiometric cation composition
Kato M.; Minachi Y.; Yoshimura K.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, The Physical Society of Japan (JPS), 1993(3) 465 - 465, 20 Sep. 1993
30p-PSA-49 Coulometric Determination of average valences of cuprate oxides
Kato M.; Sawamura T.; Saga N.; Minachi Y.; Yoshimura K.; Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, The Physical Society of Japan (JPS), 48(3) 311 - 311, 16 Mar. 1993
29a-W-12 Composition dependcnce of physical propertics of the La214 system
Yoshimura K.; Kato M.; Kageyama Y.; Kosuge K.; Imai T.; Slichter C.P.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, The Physical Society of Japan (JPS), 48(3) 247 - 247, 16 Mar. 1993
26p-PSA-47 On the Relation between Phase Separation and Superconductivity in the La214 System II
Yoshimura K; Kubota H; Nakanishi M; Saga N; Ohmura T; Sawamura T; Kato M; Kosuge K
秋の分科会講演予稿集, The Physical Society of Japan (JPS), 1992(3) 318 - 318, 14 Sep. 1992
26a-Q-3 Physical Properties of Bi2201System Newly Synthesized with Stoichometric Cation Composition
KATO Masaki; YOSHIMURA Kazuyoshi; KOSUGE Koji
秋の分科会講演予稿集, The Physical Society of Japan (JPS), 1992(3) 281 - 281, 14 Sep. 1992
27p-APS-38 Electoronic state of Cu in La214 system investigated by NQR
UEMURA T.; SHIBATA T.; KATO M.; YOSHIMURA K.; KOSUGE K.; IMAI T.; YASUOKA H.
年会講演予稿集, The Physical Society of Japan (JPS), 46(3) 262 - 262, 12 Sep. 1991
29p-APS-6 Thermal Expansion Anomaly at Valence Transition of YbInCu_4 System : Low Temperature X ray diffraction Investigation
Yoshimura K.; Shibata T.; Uemura T.; Kato M.; Kosuge K.; Hayashi A.; Ueda Y.
年会講演予稿集, The Physical Society of Japan (JPS), 46(3) 101 - 101, 12 Sep. 1991
27p-PS-49 NMR, NQR of La2-1-4 System III
Yoshimura K.; Uemura T.; Kato M.; Shibata T.; Kosuge K.; Imai T.; Yasuoka H.
春の分科会講演予稿集, The Physical Society of Japan (JPS), 1991(3) 353 - 353, 11 Mar. 1991
On Superconductivity and Microscopic Phase Separation in La_<2-x>A_xCuO_y (A=Sr,Ba)
Yoshimura K.; Uemura T.; Kato M.; Shibata T.; Kosuge K.; Imai T.; Shimizu T.; Yasuoka H.
秋の分科会講演予稿集, The Physical Society of Japan (JPS), 1990(3) 280 - 280, 02 Oct. 1990
熱電変換素子用ぺロブスカイト型BaSn1-xTaxO3の合成と物性評価
加藤 将樹
セラミックス基礎科学討論会(第50回記念大会), 2012
超臨界水熱合成法を経由したTiO2(B)ナノファイバーの調製と物性評価
加藤 将樹
ニューセラミックス懇話会(創立40周年記念行事), 2011
層状コバルト酸化物CoNb2O6の合成と物性評価
加藤 将樹
粉体粉末冶金協会平成23年度秋季大会(第108回講演大会), 2011
低次元構造を有するBa-In-Cu系酸化物の合成と物性評価
加藤 将樹
粉体粉末冶金協会平成23年度秋季大会(第108回講演大会), 2011
電気伝導性酸化物La4BaCu5O13-の元素置換および酸素不定比性と物性評価
加藤 将樹
粉体粉末冶金協会平成23年度秋季大会(第108回講演大会), 2011
超臨界水熱法を経由した高結晶性TiO2(B)ナノファイバーの合成と物性
加藤 将樹
粉体粉末冶金協会平成23年度秋季大会(第108回講演大会), 2011
IH対応の磁性金属(Fe-5Al-5Cr)/セラミックス(MgO)系複合材料の作製
加藤 将樹
本粉末冶金工業会第9回PM研究促進展, 2011
抗菌特性を有する亜鉛めっき鋼板の作製
加藤 将樹
表面処理技術協会, 2011
高強度(σb ≥ 1 GPa)と強靱性(KIC ≥ 20 MPa・m1/2)を同時に実現したパルス通電加圧焼結法(PECPS)によるアルミナ固溶ジルコニアセラミックスの作製
加藤 将樹
粉体粉末冶金協会平成23年度春季大会(第107回講演大会), 2011
パルス通電加圧焼結法(PECPS)によるカーボンナノファイバー(CNF)添加ジルコニア(3Y)強靭化アルミナ (ZTA)コンポジットの作製
加藤 将樹
粉体粉末冶金協会平成23年度春季大会(第107回講演大会), 2011
ZrO2/25mol%Al2O3固溶体セラミックスの高圧(1 GPa)焼結
加藤 将樹
日本材料学会極限環境フォーラム(大阪大学コンベンションセンター), 2011
ピストンシリンダー型超高圧装置によるZrO2-Al2O3系固溶体セラミックスの作製
加藤 将樹
ニューセラミックス懇話会 第195回特別研究会, 2010
アナターゼ型およびルチル型構造をもつTi1-xMxO2 (M = Nb,Ta) 化合物の合成と物性評価
加藤 将樹
粉体粉末冶金協会平成22年度秋季大会(第106回講演大会), 2010
1次元Heisenberg型反強磁性体BaCu2Ge2O7における磁気的相互作用の元素置換効果
加藤 将樹
粉体粉末冶金協会平成22年度秋季大会(第106回講演大会), 2010
Al2O3と微粒子Ti圧粉体のカプセルフリーN2-HIPによるAl2O3/TiNコンポジットの合成同時焼結
加藤 将樹
粉体粉末冶金協会平成22年度秋季大会(第106回講演大会), 2010
HIP処理による高密度焼結パーマロイ/Mgフェライト系コンポジットの微細構造と結晶相の制御
加藤 将樹
粉体粉末冶金協会平成22年度秋季大会(第106回講演大会), 2010
IH対応磁性金属/酸化物系複合材料の作製と特性評価
加藤 将樹
粉体粉末冶金協会平成22年度秋季大会(第106回講演大会), 2010
Synthesis and physical properties of Cu oxides with low-dimensional tri-rutile and α-PbO2 type structure
KATO Masaki
International and Interdisciplinary Workshop on Novel Phenomena in Integrated Complex Sciences: from Non-living to Living Systems, 2010
イータカーバイド型遷移金属炭化物窒化物の合成と物性
加藤 将樹
日本物理学会2010年秋季大会, 2010
ボンド交替系Pb2V3O9粉末試料のFIRレーザーによる強磁場ESR測定
加藤 将樹
日本物理学会2010年秋季大会, 2010
各種高圧装置の組合わせによる磁性金属/フェライトバルクナノコンポジットの作製 - 超高圧CIP,パルス通電加圧焼結(PECPS),HIP -
加藤 将樹
極限環境部門委員会講演会 神戸製鋼, 2010
Crossover from metallic to semiconducting behaviors in Pb2-xLnxRu2O7- (Ln = Eu, Lu, Y) compounds with pyrochlore structure
KATO Masaki
7th Joint Symposium between Doshisha University and Chonnam National University, 2010
Synthesis and magnetic properties of Cu oxides with low-dimensional structure
KATO Masaki
7th Joint Symposium between Doshisha University and Chonnam National University, 2010
Physical Properties of Elementally Substituted Ruthenates with Pyrochlore-type Structure
KATO Masaki
International Conference on Strongly Correlated Electron Systems (SCES2010), 2010
Simultaneous Synthesis and Sintering of Al2O3/Mo2N Composites Using Capsule-free Nitrogen Hot Isostatic Pressing and their Characterization
KATO Masaki
CIMTEC2010, 2010
Mgフェライト/パーマロイ磁性ナノコンポジットの作製(2)
加藤 将樹
粉体粉末冶金協会平成22年度春季大会(第105回講演大会), 2010
低次元性構造を有するCuNb2-xMxO6 (M = Ti,Si)化合物の合成と物性評価
加藤 将樹
粉体粉末冶金協会平成22年度春季大会(第105回講演大会), 2010
パイロクロア型酸化物Pb2-xLuxRu2O7-の合成と物性評価
加藤 将樹
粉体粉末冶金協会平成22年度春季大会(第105回講演大会), 2010
水熱処理による新規抗菌性酸化亜鉛ZnO粉体の合成と特性評価
加藤 将樹
第48回セラミックス基礎科学討論会, 2010
酸化チタンTiO2を助剤とした難焼結性ホウ化チタンTiB2の高密度焼結とその機械的特性
加藤 将樹
第48回セラミックス基礎科学討論会, 2010
層状銅酸化物における磁気的相互作用の元素置換効果
加藤 将樹
第48回セラミックス基礎科学討論会, 2010
Fe-Al-Cr系磁性合金粒子の酸化皮膜形成機構
加藤 将樹
ニューセラミックス懇話会 第190回特別研究会, 2009
IH対応の磁性金属/セラミックス系複合材料の作製
加藤 将樹
粉体粉末冶金協会平成21年度秋季大会(第104回講演大会), 2009
特異な低次元構造を持つBa–Cu–In–O系化合物の合成と磁気的評価
加藤 将樹
粉体粉末冶金協会平成21年度秋季大会(第104回講演大会), 2009
Ru系パイロクロア型酸化物の元素置換効果と微視的電子物性
加藤 将樹
粉体粉末冶金協会平成21年度秋季大会(第104回講演大会), 2009
中性子散乱実験によるCuSb2-xTaxO6の研究II
加藤 将樹
日本物理学会2009年度秋季大会, 2009
層状銅酸化物における磁気的相互作用の元素置換効果
加藤 将樹
粉体粉末冶金協会平成21年度春季大会(第103回講演大会), 2009
擬一次元磁気構造を有するレニウム酸化物Y5Re2O12の合成と物性評価
加藤 将樹
粉体粉末冶金協会平成21年度春季大会(第103回講演大会), 2009
Sol-Gel法によるペロブスカイト型LaxCa1-xMnO3(x=0.02) 粉体の調製と熱電変換素子材料としての特性評価
加藤 将樹
粉体粉末冶金協会平成21年度春季大会(第103回講演大会), 2009
水熱処理による新規抗菌性ZnO粉体の合成と特性評価
加藤 将樹
粉体粉末冶金協会平成21年度春季大会(第103回講演大会), 2009
カプセルフリー 高圧N2 HIP処理によるAl2O3/Mo2Nコンポジットの合成と特性評価-その(2)
加藤 将樹
粉体粉末冶金協会平成21年度春季大会(第103回講演大会), 2009
高強度・高電気伝導性カーボンナノファイバーを分散させたナノコンポジット
加藤 将樹
日本材料学会 J-COM38, 2009
金属/フェライトナノコンポジットの作製と特性評価
加藤 将樹
ニューセラミックス懇話会 第185回特別研究会, 2008
パルス通電加圧焼結法を用いたカーボンナノファイバー(CNF)分散セラミックス系コンポジットの作製とその特性
加藤 将樹
粉体粉末冶金協会平成20年度秋季大会(第102回講演大会), 2008
Unconventional Superconductivity and Strongly Correlated Electron Behaviors in Layered Transition Metal Oxides
KATO Masaki
6th Joint Symposium between Chonnam National University and Doshisha University, 2008
Crossover from Metallic to Semiconducting in Pb2-xLnxRu2O7- (Ln = Sm, Eu) Compounds with Pyrochlore Structure
KATO Masaki
The 10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, 2008
中性子散乱実験によるCuSb2-xTaxO6の研究
加藤 将樹
日本物理学会2008年度秋季大会, 2008
Mechanical Properties of Simultaneously Synthesized and Consolidated Carbon Nanofiber (CNF)-Dispersed B4C Composites by Pulsed Electric-Current Pressure Sintering
KATO Masaki
6th International Conference on Inorganic Materials, 2008
パルス通電加圧法を用いたカーボンナノファイバー (CNF)/TiB2コンポジットの作製と機械的特性
加藤 将樹
粉体粉末冶金協会平成20年度春季大会(第101回講演大会), 2008
Pb-Eu固溶系ルテニウムパイロクロア酸化物の物性
加藤 将樹
日本物理学会第63回年次大会, 2008
高磁気特性と高電気抵抗を有するマグネシウムフェライト材料の開発と応用
加藤 将樹
JSTイノベーションプラザ京都 シーズ発表会, 2008
Fabrication of carbon nanofiber (CNF)/SiAlON composites by pulsed electric-current pressure sintering and their mechanical and electrical properties
KATO Masaki
MS&T '07 (Materials Science and Technology '07), 2008, Detroit
熱間静水圧プレス(HIP)を用いた高窒素圧下でのAl2O3/Mo2Nコンポジットの合成および物性評価(同大工)
加藤 将樹
第46回セラミックス基礎科学討論会, 2008
Simultaneous synthesis and consolidation of carbon nanofiber (CNF)-dispersed composites by spark plasma sintering (SPS)
KATO Masaki
7th Pacific Rim Conference on Ceramic and Glass Technology, Shanghai International Convention Center, 2007, Shanghai, China
新奇量子現象を示す層状無機セラミックスの開発
加藤 将樹
京都産学公連携フォーラム, 2007
Ruddlesden-Popper Can+1(Mn1-xVx)nO3n+1 (n=2) 化合物粉体の調製と焼結体の熱電特性
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
高圧焼結法によるMg-Fe-O酸化物フェライト/磁性金属系複合材料の作製
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
パルス通電加圧法を用いたカーボンナノファイバー分散/B4Cナノコンポジットの合成同時焼結と機械的特性
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
ハロゲンインターカレートされた層状コバルト酸化物の元素置換効果と物性評価
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
金属絶縁体転移を示すNa-Ti-O系化合物の液相法による合成と特性評価
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
金属絶縁体転移を示すパイロクロア型ルテニウム酸化物の合成と特性評価
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
三角格子構造を有するLi-V-S系の合成と物性評価
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
層状水和コバルト酸化物の合成と物性評価
加藤 将樹
粉体粉末冶金平成19年度秋季大会(第99回講演大会), 2007
パイロクロア型ルテニウム酸化物Pb2-xLnxRu2O7-δ (Ln = Sm, Eu)における金属絶縁体転移
加藤 将樹
日本物理学会第62回年次大会, 2007
Al2O3/Mo成形体からカプセルフリーで高窒素圧下のHIP処理による高密度Al2O3/Mo2N複合材料の作製と特性評価
加藤 将樹
粉体粉末冶金平成19年度春季大会(第98回講演大会), 2007
Ruddlesden-Popper Can+1(Mn1-xVx)nO3n+1 (n=2, ∞: 0≤x≤0.04) 化合物粉体の調製と焼結体の電気・磁気特性
加藤 将樹
粉体粉末冶金平成19年度春季大会(第98回講演大会), 2007
Metal-Insulator transition in Pb2-xLnxRu2O7- (Ln = Sm, Eu) compounds
KATO Masaki
The International Conference on Strongly Correlated Electron Systems, 2007, Houston, USA
Simultaneous Synthesis and Consolidation of W-Added ZrB2by Pulsed Electric Current Pressure Sintering and Their Mechanical Properties
KATO Masaki
The Sixth Pacific Rim International Conference on Advanced Materials and Processing, ICC Jeju Island, Korea
Development of innovative magnetic materials via active site-selective substitution in hexagonal ferrites as multi-site compounds
中村 裕之; 和氣 剛; 加藤 将樹; 小林 寿夫; 酒井 宏典; 井原 慶彦; 池野 豪一
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), 2022/04 -2026/03, Coinvestigator, Grant-in-Aid for Scientific Research (A), Kyoto University
Development of innovative thermoelectric materials based on the strongly-correlated electron system in transition-metal oxides
Kato Masaki
In this study, we apply the quantum critical phenomenon by synthesizing a novel substitution type solid solution for pyrochlore-type transition metal oxides and related transition-metal oxides, which show quantum critical phenomena at the boundary between conductors and insulators. The purpose was to develop new thermoelectric materials. It was confirmed that the thermoelectric properties were exhibited in a novel substitution type solid solution in which Co, Cu, Mn, etc. were substituted with a pyrochlore-type oxide containing ruthenium. Although the dimensionless figure of merit ZT (= S2T / ρκ, S is the Seebeck coefficient, ρ is the electrical resistivity, κ is the thermal conductivity, and T is the absolute temperature) was not found to be high enough, it was clarified that the thermoelectric conversion characteristics are exhibited by performing appropriate carrier doping to the electronic state near the quantum critical point., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2019/04 -2022/03, Grant-in-Aid for Scientific Research (C), Doshisha University
Novel physical properties of quasi-two dimensional layered compounds
MICHIOKA Chishiro; YOSHIMURA Kazuyoshi; UEDA Hiroaki; KATO Masaki
In quest of a novel breakthrough of layered compounds, we have prepared new layered compounds and have investigated their physical properties.
For Sr1-xCaxCo2P2 system, their spin dynamics in the vicinity of the ferromagnetic quantum critical point have been clarified by using the NMR technique. As potential compounds to exhibit novel cluster science, we have studied physical properties of La3Re10 which has Re 5.5+ intermediate valence, Li2InMo3O8, Li2ScMo3O8 and Nb3Cl8 in which Mo3O8 or Nb3Cl8 are clusterized in their crystal structures. Then we have discovered an unconventional phase transition in La3Re2O10,the 120-degree magnetic structure in Li2InMo3O8, an spin liquid state in Li2ScMo3O8 and a characteristic charge disproportionation in Nb3Cl8. We have also clarified the physical properties of 1T-CrSe2, where the unstable Cr tetravalence exhibit interesting phenomena. These studies could become a breakthrough of new material science., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2014/04 -2017/03, Coinvestigator, Grant-in-Aid for Scientific Research (C), Kyoto University
Development of new insoluble oxygen evolution ceramic electrode used for electrolysis in molten salts
HIROTA KEN; KATO Masaki; GOTO Takuya
The present applicants focused attention on a metal oxide of spinel FeAl2O4 as the insoluble oxygen evolution electrodes at high temperatures. To improve both the electrical conductivity and the durability in the molten salts, the present applicants have synthesized solid solution Fe1+Al2O4 ceramics by controlling the content of Fe from the chemical stoichiometry of 1. Their electrical resistivity ρ of spinel Fe1+δAl2O4 ceramics was much reduced from 1.46 x10∧4 (δ=0) to 4.46 x10∧0 Ω・m (δ=0.45) with increasing δ value.
Some physical and chemical properties of the present spinel ceramics have been investigated from the viewpoints of the anode electrode for oxygen generating in the molten fluoride salts during electrolyzing test. The possibility of Fe1.25Al2O4 being used as non-consumable anode electrode is suggested and usability of oxide electrodes is recognized., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), 2013/04 -2016/03, Coinvestigator, Grant-in-Aid for Scientific Research (B), Doshisha University
Investigations of novel physical properties in multi-layered compounds
CHISHIRO Michioka; KATO Masaki; YOSHIMURA Kazuyoshi
In the past several decades, many layered compounds have been investigated because they show a variety of interesting physical properties. In this study, I investigated two series of layered compound systems to search for novel physical properties. First, I investigated Chalcogenide-system FeTe1-xSex which is one of the Fe-based superconductors, and clarified details of their magnetic fluctuations. Next, from investigations of physical properties of SrCo2P2 and its family compounds, I discovered an itinerant electron- metamagnetic transition and found that the system shows a quantum critical behavior by substitution of Sr at Ca site.
These results are worthy for the systematic understanding of the itinerant magnetism on the quasi two dimensional layered compounds., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2011 -2013, Coinvestigator, Grant-in-Aid for Scientific Research (C), Kyoto University
Strongly-correlated electron system on pyrochlore-type oxides with metal-insulator transition
KATO Masaki
The pyrochlore ruthenates Pb2-xLnxRu2O7- (Ln = Y, Nd) have been successfully synthesized by the solid-state reaction. The solid-solution compounds of Pb2-xLnxRu2O7- (Ln = Y, Nd) undergo a crossover from metallic (x = 0) to insulating (x = 2) with increasing x. Owing to a localized magnetic moment on Ru site, these compounds with x > 0.2 also indicate the spin-glass like behaviors at low temperature (T < TSG). As a result of electric resistivity measurements, the samples with 0.4 ? χ ? 0.8 show the metal-insulator transition. In the metallic region, values of electric resistivity obey T2 dependencies which indicate the strongly correlated electron behaviors in this system., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2010 -2012, Principal investigator, Grant-in-Aid for Scientific Research (C), Doshisha University
Synthesis and Physical Properties of Low-dimensional Transition-metal compounds
Basic Science Research Program, 2004 -2009, Competitive research funding
低次元遷移金属化合物の合成と物性
基礎科学研究, 2004 -2009, Competitive research funding
Quantum critical phenomena of layered transition-metal compounds under multiple extreme conditions
KATO Masaki
本研究では, 磁気ゆらぎが強いと考えられる層状遷移金属化合物において, ナノスケールで物質・構造制御を行い, 超伝導等の新奇量子臨界現象を示す層状遷移金属化合物を開発することを目的とした. その結果, 擬一次元磁性体Y_5Re_2O_<12>について, 合成およびYサイトへの元素置換を行ない, その電磁気特性を評価することで, 多重極限環境における構造と物性の関連を詳細に研究した. 擬一次元磁性体への圧力印加は, 結晶構造の三次元性を高め, 電子の遍歴性を増大させることにより, 系の電磁気特性を著しく変化させる効果を有することが明らかになった., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2007 -2008, Principal investigator, Grant-in-Aid for Scientific Research (C), Doshisha University
Fabrication of bulk magnetic composite materials consisting of controlled nano-structures
HIROTA Ken; KATO Masaki
With aiming at developing new bulk magnetic materials having both high saturation magnetization density and high magnetic permeability for high-frequency electric applications, fabrication of MgFe_2O_4/Fe-Ni alloy bulk nano-composites, in which Fe-Ni grains (〜5μm in diameter) are fully surrounded with thin MgFe_2O_4layer (〜0.3μm in thick), has been tried: the former metal grains have high saturation magnetization density and the latter has high electric resistivity.
The first stage, the best chemical compositions of MgFe_2O_4 have been investigated. Mg(Fe_<1-x>Mn_x)_2O_4 solid solution ferrites were prepared using both conventional solid reactions and sol-gel process, and their magnetic properties were measured precisely ; x=0.2 composition gave the best data. The second stage, plastic deformation of Mg(Fe_<1-x>Mn_x)_2O_4 ferrites were evaluated at temperature 1200 to 1350℃ in air.
Finally MgFe_2O_4/Fe-Ni alloy bulk composites has been tried by adopting high-pressure sintering two powders: Composite Powder I and Composite Powder II . The former was prepared as follows; fine MgO particle-coated Fe-Ni powders were heat-treated under various oxygen partial pressures at 600°and 700℃. The latter was fine MgO+a-Fe_2O_3 mixed powder particles-coated Fe-Ni powders. For the composite powders, two sintering processes were tried; i.e., pulsed-electric current pressure sintering PECPS (800℃/30MPa/3min) or HIP (950°-1250℃/196MPa/2h). Phase identification by XRD and SEM observation revealed that dense microstructure consisting of two phases (spinel MgFe_2O_4 and Fe-Ni alloy) was attained from the combination of composite powders II, PECPS and a re-oxidation process. However, other process resulted in formation of Wusteit phase of Mg_<1-x>Fe_xO and FeO in addition to Fe-Ni due to highly reductive atmosphere during the sintering. Thus obtained composite materials consisting two phases showed good magnetic properties at room temperature as expected from their compositions and microstructures: saturation magnetization density B_s of 1.20 T, and permeabilityμ〜15-30 at 1 MHz, and a Curie point above 460℃., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2005 -2007, Grant-in-Aid for Scientific Research (B), Doshisha University
新奇量子現象を示す層状無機セラミックス材料の合成と評価
若手研究(B), 2005 -2006, Competitive research funding
フラストレーション系の新奇超伝導体の探索
吉村 一良; 加藤 将樹
強相関電子系の中でパイロクロア型磁性化合物はスピンや電荷のフラストレーションが大きいことで注目されている.パイロクロア化合物が金属伝導を示す場合,その大きな磁気フラストレーションを利用して超伝導になることが予想され,最近Cd_2Re_2O_7というパイロクロア型酸化物が超伝導を示すことが初めて見出された.本研究では,この物質の単結晶を作成に成功し,核磁気共鳴測定を室温まで行ったところ,T^*〜200Kにおいて,2次の構造相転移を示し,その際,帯磁率・電気抵抗率ともにT^*以下において大きく減少を示すことが明らかになった.また,^<111>Cd-NMR測定から,T^*以下においてはスピン励起が減少することから,パイロクロア格子はいわゆる四量体を形成し,系は擬ギャップ(高温超伝導のスピン・ギャップと類似)状態をとることが明らかになった.この現象は,本系の超伝導発現と密接な関係があると考えられる.現在もCd_2Re_2O_7の物性については,様々な実験・研究を行っており,次々と異常な物性が明らかになってきている.例えば,ホール係数,ゼーベック係数など輸送現象でも,特異な振る舞いが見いだされている.このようにパイロクロア型Cd_2Re_2O_7は,格子・スピン・電荷・軌道といった多くの自由度が絡み合った非常に興味深い系であると考えられる.本研究では,Cd_2Re_2O_7系を中心としてパイロクロア系の詳細な物性を研究した一方,三角格子超伝導体Na_xCoO_2・yH_2Oについても詳細な核磁気共鳴実験を行い,この系がトリプレット超伝導体である可能性が高いことを見いだした。今後,パイロクロア系や三角格子系において新規超伝導体の探索を行い,新たな超伝導体発現機構に関して調べていく予定であり成果が大いに期待される., 日本学術振興会, 科学研究費助成事業, 2002 -2003, 萌芽研究, 京都大学
金属絶縁体転移を示す新奇遷移金属化合物の研究
若手研究(B), 2002 -2003, Competitive research funding
Search for Novel Superconductors with High-Tc in the Ru Oxide System and Possibility for Coexistence of Magnetism and Superconductivity
YOSHIMURA Kazuyoshi; KATO Masaki
It is quite important to find out new compounds which show new physical properties, leading to a possible breakthrough in the field of solid state sciences. In this context, the role of chemists is very important in this research field.
We have investigated the syntheses and chemical and physical properties of various 4d and 5d transition metal oxide systems, and tried to find new and novel compounds which show new-type of quantum phenomena, especially, superconducting and metal-insulator transition compounds.
As a result, recently, the Pyrochlore oxide Cd_2Re_2O_7 has been found to exhibit superconductivity at about 1 K, which is a firstly-found superconductor in the frustrated-spin system. We also found a pseudo-gap behavior in Cd_2Re_2O_7 below T^* of about 200K which resembles the spin-gap behavior in the cuprate high-T_c systems.
We have also found new-type compounds with interesting physical and chemical properties in this research program as follows: EuSr_2RuCu_2O_8 (coexistence of ferromagnetism and superconductivity), Tl_2Ru_2O_7 (Metal-Insulator transition and spin-gap behavior below T_), Bi_2Ru_2O_7 and Pb_2Ru_2O_7 (Pauli paramagnetism with antiferromagnetic spin fluctuations). Now, further study of physical properties of these compounds including spin dynamics is still in progress in detail, and will be reported elsewhere., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2000 -2002, Grant-in-Aid for Scientific Research (B), KYOTO UNIVERSITY
トリルチル型化合物CuSb2O6の低次元性に関する研究
若手研究(B), 2000 -2001, Competitive research funding
Search for New A'_3ABO_6-Type 1D-Antiferromagnets and Research on Their Physical Properties-around Ca_3Co_2O_6
KOSUGE Koji; KATO Masaki
In this study, we have precisely investigated which metal-elements can be put into the A', A and B sites in the A'_3ABO_6 compounds with K_4CdCl_6-type structure in order to clarify the general stability condition of this structure. Thus, the purpose of the study is to search the new various 1D-magnets with this structure by utilizing the obtained conditions and to investigate their physical properties. Experimental results are as follows.
Searching the new compounds with the K_4CdCl_6-type structure, we have been succeeded in synthesizing these three new compounds : Ca_3CoIrO_6, Ca_3CoRuO_6 and Ca_3CoRhO_6. Especially, Ca_3CoRhO_6 indicates the behaviors of the 2D-triangular lattice antiferromagnets (2D-TLA) with the Ising-type ferromagnetic spin chains just as the case with Ca_3Co_2O_6, both of which indicate two Neel temperature, T_ and T_. In the temperature regime between T_ and T_, the magnetic state of Ca_3CoRhO_6 has been found to be the partially disordered antiferromagnetic (PDA) one, which is characteristic to the case of the 2D-TLA, investigated by neutron diffraction experiments. This is the first observation of the PDA state in the 2D-TLA with Ising-type ferromagnetic chains, although the PDA state has been hardly thought to be realized in the 2D-TLA case with the ferromagnetic chains. Furthermore, the PD spin chains have been found to be frozen randomly below T_N, because the ferromagnetic hatchings can hardly flip up to down and down to up. Consequently, the transition at T_N is that from the PDA state to the spin glass state with decreasing temperature, below which the coexistence state is realized of 2/3 antiferromagnetic chains and 1/3 frozen spin chains. In order to break the frozen state and to flip the spin chain, we found to need very high magnetic fields more than several 10 T at least. Further investigations are necessary for fully understanding of the low dimensional magnetic systems., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 1999 -2000, Grant-in-Aid for Scientific Research (B)., KYOTO UNIVERSITY
かごめ格子をもつバナジウム酸化物における量子スピン効果
その他, 1998 -1999, Competitive research funding
ルテニウム系ペロブスカイト型酸化物の異常な遍歴電子物性
吉村 一良; 加藤 将樹
本研究では金属電気伝導性を示す4d遷移金属系のルテニウム(Ru)のぺロブスカイト型酸化物(Sr_<1-x>Ca_xRuO_3)に注目し、その磁性の機構をスピン揺動の立場から明らかにすることを目的とした。この擬二元系の磁気的振る舞いを系統的にかつ微視的に理解するために、磁性を担っているRu自身の核磁気共鳴およびルテニウムと直接化学結合ボンドによって結ばれ金属的電気伝導を担っていると考えられる酸素の核磁気共鳴を中心的に行った。また、比熱測定や強磁場磁化測定を行い、遍歴電子の磁性理論と比較検討した。
まず、40テスラまでのパルス強磁場を用いた強磁場磁化測定の結果、Sr_<1-x>Ca_xRuO_3系全体にわたり40テスラにおいても強磁性磁化が飽和せず、このことは遍歴電子系特有の振る舞いであると考えられる。また、Sr_<1-x>Ca_xRuO_3系の比熱測定の結果、x=0からx=1に向かうにつれて、電子比熱係数が増大し、強磁性が消失するx=0.8で最大値(約100mJ/K^2mol)を示すことが明らかになり、交換相互作用によって増強されていることが明らかになった。これらの値とその温度変化は遍歴電子強磁性に対するスピンの揺らぎの自己無撞着(SCR)理論で定量的に説明できることが解析の結果明らかになり、スピンの揺らぎのエネルギー幅と波数依存の幅を与えるパラメータT_0T_Aを系統的に見積もることができた。核磁気共鳴に関しては、Ru核の測定は現在進行中であるが、^<17>Oの核磁気共鳴測定の結果、x=1.0,0.6に関しては絶対値、温度変化ともに遍歴電子強磁性に対するSCR理論に良く合うことが明らかになってきた。しがしながら、x=0の強磁性体に対してはSCR理論では説明が付かないこともわかってきており、この物質がインバー効果を示すことと考え合わせると中間領域の遍歴電子強磁性体であると考えられる。また、x=0のCaRuO_3付近の磁気長距離秩序の喪失の原因は、反強磁性的な相互作用によるのではなく、強磁性から強磁性的な金属状態への移行であると結論づけられる。今後、磁性元素であるRu自身の核磁気共鳴測定を完結させ、さらに詳しく本系の微視的・動的振る舞いを調べていく予定である。, 日本学術振興会, 科学研究費助成事業, 1997 -1998, 基盤研究(B), 京都大学
Role of anions and chemical bond in the metallic inorganic compounds
KOSUGE Koji; KATO Masaki; YOSHIMURA Kazuyoshi; OKA Yoshio
(A)Investigation of vanadium chalcogenides
(1)We tried to grow the single crystals of vanadium chalcogenides V_3X_4, V_5X_8 (X=S,Se) by a chemical transport methods using of TeCl_2, I_2, HCl and Cl_2 as transport agents.
The infrared arc furnace was used for these experiment. As a result, it was confirmed that I_2 as a transport agent is most adequate to get a larger good single crystal. For example, we got a single crystal of V_5S_8 with the dimension 5*5*1mm.
(2)Measurement of magnetizatio process of V_5S_8 single crystal was done under the high magnetic field up to 50T,which showed two step magnetization. The paper on this experiment with the detailed discussion is now contributing.
(3)And also NMR (nuclear magnetic resonance) measurement on ^<51>V of V_5S_8 is under investigation
(B)Investigation of (Sr_<1-x>Ca_x) RuO_3 with the perovskite structure.
Both of CaRuO_3 and SrRuO_3 have the perovskite-type structure and show a metallic behavior. The former is paramagnetic down to 1.2K and the latter shows a phase transtition to ferromagnetic at 150K.The characteristics of the solid solution (Sr_<1-x>Ca_x) RuO_3 is in the behavior of thermal expansion (sigma). The sigma of CaRuO_3 can ve fitted by a Debye function. On the other hand, the sigma of SrRuO_3 ahows "Invar effect" below T_c, that is, independent on temperature. This is a first discovery of Invar Oxides, which may be closely related to electron correlation. The paper has been published in Phys. Rev.B., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 1995 -1997, Grant-in-Aid for Scientific Research (A), KYOTO UNIVERSITY
強い電子相関を示す遷移金属カルコゲナイドの組成制御と固体化学的評価
加藤 将樹
本研究では強い電子相関に基づく磁性あるいは電気伝導性を示す遷移金属カルコゲナイドについて固体化学的な評価を行うことを目的とした。主に対象としたのは、(a)Y_2Ba_4Cu_7O_<15-δ>、(b)Ba(Co_<1-x>Ni_x)S_<2-y>の2つの系であるが、紙面の都合上以下(a)について記す。Y_2Ba_4Cu_7O_<15-δ>(Y247)相は、YBa_2Cu_3O_<7-δ>(Y123)相と、YBa_2Cu_4O_8(Y124)相が、C軸方向に交互に積層した構造を持つ酸化物高温超伝導体であるが、その超伝導転移温度(Tc)には、これまで90K級および60K級の2種類の報告があり、研究者間で一致を見ていなかった。そこでこの2種類のTcをもつY247化合物を合成し、電子顕微鏡(TEM)観察および電気四重極共鳴(NQR)を用いて、微視的な結晶構造および電子状態を詳細に調べた。試料合成は通常の固相反応法(試料A)、錯体重合法(試料B)の2種の方法を用いた。交流帯磁率の結果、試料A、BのTcはそれぞれ65K、93Kであった。TEM観察の結果、試料Aの方はc軸方向にわずかな転位が見られるものの、ほぼY247構造の周期を保っていた。一方、試料Bの方は数単位格子程度のY123、Y124の領域が存在しているのが確認された。次にこれらの試料について、1.3KでCu核のNQR測定を行った。試料AのCu(2)サイトにおいてブロードな1種類のサイトが観測された。これは、理想的なY247相において、Cu(2)サイトが結晶学的に2サイトあり、それらがほぼ同一の共鳴周波数(ν_Q)を持つためであると考えられる。一方、試料BのCu(2)サイトは、試料Aと比較してシャープな2種類のサイトが見られた。この2つのサイトのν_Qは、Y123およびY124のCu(2)サイトのν_Qと同一の値を示した。このNQRの結果は、試料Bには、数ユニットセル程度のY123、Y124のマイクロドメインが成長していることを示唆しており、TEM観察の結果と一致している。従って 試料Bの高いTcはY123相(Tc約93K)のマイクロドメインに原因があると考えられる。, 日本学術振興会, 科学研究費助成事業, 1996 -1996, 奨励研究(A), 京都大学
Mixed-Valent State and Conductivity of Rare Earth-Transition Metal Chalcogenide
YOSHIMURA Kazuyoshi; KATO Masaki
Transition metal compounds, which show metallic conductivity, are generally known to be in mixed-valent states. Among copper chalcogenide system, the compounds containing the rare earth element Pr becomes semiconducting, although they have a composition in which the mixed-valent states are realized. In order to elucidate this reason, we have measured the values of valences of cations utilizing the Coulometric titration method, performed valence bond estimations from rietvert analyzes of X-ray diffraction data, done the copper antiferromagnetic nuclear resonance (AFNMR) and nuclear quadrupole resonance (NQR). As their results, it has been found that there occurs a hybridization (mixing) between Pr 4f and copper 3d and/or oxygen 2p orbitals, resulting in the localization of holes doped to the system through a kind of Fermi surface effect (Kondo effect).
As a result of our investigation of compounds based on the combination of rare earth element Yb and 3d transition metal Cu, the intermetallic compound system YbCu_<5-x>Ag_x with the cubic BeCu_5-type structure has been found to show a dense Kondo effect in the whole composition x-range, where the characteristic temperature (Kondo temperature) varies systematically. On the other hand, isostructural system YbCu_<5-x>In_x has been found to show a crossover from a dense Kondo system (x=0) to a fluctuating system accompanied with the valence transition (x=1). Furthermore, the Kondo insulator-like behavior was observed in the intermediate composition. Typical phenomena due to the frustration effect have also been observed in the strongly correlated electron system, R_2V_2O_7 and R_2Ru_2O_7 (R being rare earth element) compounds with the pyrochlore-type structure.
As for improving the apparatus, we made a improvement of NMR apparatus by introducing the wide-band power amplifier and the digital memory system in order to be able to measure the relaxation time in the last year. In this year, we have introduced the 8T superconducting magnet with high resolution in order to measure high resolution NMR.By using this apparatus, we have performed the ^<17>O NMR in the ruthenate system and investigated the dynamical behavior of Ru spins by measuring ^<17>O nuclear spin-lattice relaxation time. As a result, it has been found that the invar-type compound SrRuO_3 does not follow the mean-field localized moment model as well as the spin fluctuation theory which is valid in the case of weak itinerant electron magnets, implying that the system is in the intermediate metallic electron state. Furthermore, although CaRuO_3 was thought to have strong antiferromagnetic correlation, its dynamical behavior indicates that this compound is a Pauli paramagnet being very close to the ferromagnetic state with a strong ferromagnetic spin correlation. Our result of the specific heat measurement on CaRuO_3 can be explained by the itinerant electron spin fluctuation theory, which is consistent with the NMR result.
Furthermore, from now on, we have a plan to investigate the Yb chalcogenide compounds from the microscopic and dynamical view points., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 1995 -1996, Grant-in-Aid for Scientific Research (B), KYOTO UNIVERSITY
新奇量子現象を示す層状無機セラミックスの開発
実吉奨学会研究助成, 各種団体からの研究助成, Competitive research funding
強い電子相関を示す遷移金属化合物の固体物性学的評価
加藤科学振興会研究助成, 各種団体からの研究助成, Competitive research funding
カーボンナノファイバー分散ペロブスカイト系新規熱電材料の開発
JSTシーズ発掘試験研究, 各種団体からの研究助成, Competitive research funding