論文

• Takehiro Koike, Hena Das, Kengo Oka, Yoshihiro Kusano, Fernando Cubillas, Francisco B. Bojorqez, Victor Emmanuel Alvarez-Montano, Shigekazu Ito, Kei Shigematsu, Hayato Togano, Ikuya Yamada, Hiroki Ishibashi, Kubota Yoshiki, Shigeo Mori, Noboru Kimizuka, Masaki Azuma. Pressure-Induced YbFe2O4-Type to Spinel Structural Change of InGaMgO4, Solids, vol. 5, no. 3, pp. 422-433, Aug. 2024.
• Masayuki Fukuda, Ikuya Yamada, Hajime Hojo, Chihiro Takahashi, Yuya Yoshida, Katsuhisa Tanaka, Masaki Azuma, Koji Fujita. Topochemical synthesis of perovskite-type CuNb₂O₆ with colossal dielectric constant, Journal of Materials Chemistry C, 9, 39, 1398-13990, Aug. 2021.
• Hajime Yamamoto, Kaoru Toda, Yuki Sakai, Takumi Nishikubo, Ikuya Yamada, Kei Shigematsu, Masaki Azuma, Hajime Sagayama, Masaichiro Mizumaki, Kiyofumi Nitta, Hiroyuki Kimura. Emergence of a Cubic Phase Stabilized by Intermetallic Charge Transfer in (1 – x)PbVO₃–xBiCoO₃ Solid Solutions, CHEMISTRY OF MATERIALS, 32, 16, 6892-6897, July 2020.
• Yuki Sakai, Junye Yang, Runze Yu, Hajime Hojo, Ikuya Yamada, Ping Miao, Sanghyun Lee, Shuki Torii, Takashi Kamiyama, Marjana Ležaić, G.Bihlmayer, M. Mizumaki, J.Komiyama, T.Mizokawa, H.Yamamoto, T.Nishikubo, Y.Hattori, K. Oka, Y.Yin, J.Dai, W.Li, S.Ueda, A.Aimi, D.Mori, Y. Inaguma, Z.Hu, T. Uozumi, C.Jin, Y.Long, Masaki Azuma. A-site and B-site charge orderings in an s-d level controlled perovskite oxide PbCoO₃, Journal of the American Chemical Society, Vol. 139, No. 12, pp. 4574-4581, Mar. 2017.
• Kousuke Nishimura, Ikuya Yamada, Kengo Oka, Yuichi Shimakawa, Masaki Azuma. High-pressure synthesis of BaVO3: A new cubic perovskite, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Vol. 75, No. 6, pp. 710-712, June 2014.
• Ikuya YAMADA, Kentaro SHIRO, Kengo OKA, Masaki AZUMA, Tetsuo IRIFUNE. Direct observation of negative thermal expansion in SrCu₃Fe₄O₁₂, Journal of the Ceramic Society of Japan, Vol. 121, No. 1418, pp. 912-914, Oct. 2013.
• Matteo d’Astuto, Ikuya Yamada, Paola Giura, Lorenzo Paulatto, Andrea Gauzzi, Moritz Hoesch, Michael Krisch, Masaki Azuma, Mikio Takano. Phonon anomalies and lattice dynamics in the superconducting oxychlorides Ca₂−_xCuO₂Cl₂, PHYSICAL REVIEW B, Vol. 88, pp. 014522, July 2013.
• Yutaka ITOH, Takato MACHI, Ikuya YAMADA, Masaki AZUMA, Mikio TAKANO. Cu NQR and NMR Studies of Optimally Doped Ca₂-_xNa_xCuO₂Cl₂, Journal of the Physical Society of Japan, Vol. 82, pp. 055001-1-2, Apr. 2013.
• Yutaka ITOH, Takato MACHI, Ikuya YAMADA, Masaki AZUMA, Mikio TAKANO. Cu NQR and NMR Studiesof Optimally Doped Ca₂xNaxCuO₂Cl₂, Journal of the Physical Society of Japan, Vol. 82, No. 5, Apr. 2013.
• Y. Kumagai, F. Oba, I. Yamada, M. Azuma, I. Tanaka. First-principles study of defect-induced potentials in Ca2CuO2Cl2., Phys. Rev. B, Vol. 80, pp. 85120-1-85120-9, 2009.
• Kohki Satoh, Masatoshi Hiraishi, Masanori Miyazaki, Satoshi Takeshita, Akihiro Koda, R. Kadono, I. Yamada, K. Oka, M. Azuma, Y. Shimakawa, M. Takano. Effect of Zn substitution for Cu on Ca2-xNaxCuO2Cl2 near the hole concentration of 1/8 per Cu., Physica B-Condensed Matter, Vol. 404, pp. 713-716, 2009.
• Mizokawa, T., Y. Morita, T. Sudayama, K. Takubo, I. Yamada, M. Azuma, M. Takano, Y. Shimakawa. Metallic versus insulating behavior in the A-site ordered perovskite oxides ACu3Co4O12 (A = Ca and Y) controlled by Mott and Zhang-Rice physics., Phys. Rev. B, Vol. 80, pp. 125105-1-125105-4, 2009.
• T. Hanaguri, Y. Kohsaka, M. Ono, M. Maltseva, P. Coleman, I. Yamada, M. Azuma, M. Takano, K. Ohishi, H. Takagi. Coherence Factors in a High-Tc Cuprate Probed by Quasi-Particle Scattering Off Vortices, Science, Vol. 32, pp. 923-926, 2009.
• Kengo Oka, Masaki Azuma, Ikuya Yamada, Soshi Takeshita, Kohki Satoh, Akihiro Koda, Ryosuke Kadono, Mikio Takano, Yuichi Shimakawa. Magnetic ground-state of perovskite PbVO3 with large tetragonal distortion, Inorganic Chemistry, Vol. 47, No. 16, pp. 7355, Aug. 2008.
• I. Yamada, K. Takata, N. Hayashi, Shinohara Satoshi, M. Azuma, Shigeo Mori, S. Muranaka, Y. Shimakawa, M. Takano. A perovskite containing quadrivalent iron as a charge-disproportionated ferrimagnet., Angew. Chem. Int. Ed., Vol. 47, pp. 7032-7035, 2008.
• T. Hanaguri, Y. Kohsaka, J. C. Davis, C. Lupien, I. Yamada, M. Azuma, M. Takano, K. Ohishi, M. Ono, H. Takagi. Quasi-particle interference and superconducting gap in a high-temperature superconductor Ca2-xNaxCuO2Cl2, Nature Physics, Vol. 3, pp. 865-871, 2007.
• T. Lancaster, S. J. Blundell, P. J. Baker, F. L. Pratt, W. Hayes, I. Yamada, M. Azuma, M. Takano. A muon-spin relaxation study of BiMnO3, Journal of Physics-Condensed Matter, Vol. 19, 2007.
• K. Takata, I. Yamada, M. Azuma, M. Takano, Y. Shimakawa. Magnetoresistance and electronic structure of the half-metallic ferrimagnet BiCu3Mn4O12, Phys. Rev. B, Vol. 76, pp. 024429-1-024429-4, 2007.
• T. Hanaguri, Y. Kohsaka, J. C. Davis, C. Lupien, I. Yamada, M. Azuma, M. Takano, Kazuki Ooishi, H. Takagi. Low-energy spectroscopic mapping studies in optimally-doped Ca2-xNaxCuO2Cl2., Physica C, Vol. 460, pp. 954-955, 2007.
• I. Yamada, M. Azuma, Y. Shimakawa, M. Takano. Single crystal growth of A-site deficient superconductor Ca2-xCuO2Cl2., Physica C, Vol. 460, pp. 420-421, 2007.
• M. Azuma, S. Niitaka, A. Belik, S. Ishiwata, T. Saito, K. Takata, I. Yamada, Y. Shimakawa, M. Takano. Magnetic Ferroelectrics Bi, Pb-3d Transition Metal Perovskites, Transactions of Materials Research Society of Japan, Vol. 31, No. 1, pp. 41-46, 2006.
• Yamada, A.A. Belik, M. Azuma, Harjo S., T. Kamiyama, Y. Shimakawa, M. Takano. Single-Layer Oxychloride Superconductor Ca2-xCuO2Cl2 with A-Site Cation Deficiency, Phys. Rev. B, Vol. 72, No. 222, pp. 224503-1-224503-5, 2005.
• Kazuki Ooishi, I. Yamada, Akihiro Kohda, Wataru Higemoto, Saha S.R., R. Kadono, Kojima K.M., M. Azuma, M. Takano. Magnetic Phase Diagram of Hole-Doped Ca2-xNaxCuO2Cl2 Cuprate Superconductor, J. Phys. Soc Jpn, Vol. 74, No. 9, pp. 2408-2412, 2005.
• Yamada, M. Azuma, M. Takano. Superconductivity at 38 K in the Single Layer Oxychloride without Cation Substitution, Physica C,, Vol. 412-414, Part 1, pp. 27-30, 2004.
• M. Azuma, T. Saito, I. Yamada, Y. Kohsaka, H. Takagi, M. Takano. Single Crystal Growth of Ca2-xNaxCuO2Cl2 and Related Compounds at High Pressures of Several GPa, Journal of Low Temperature Physics,, Vol. 131, No. 3/4, pp. 671-679, 2003.
• T Kimura, S Kawamoto, I. Yamada, M. Azuma, M. Takano, Y. Tokura. Magnetocapacitance Effect in Multiferroic BiMnO3, Phys. Rev. B,, Vol. 67, No. 18, pp. 180401(R)-1-180401(R)-4, 2003.
• M. Azuma, T. Saito, S. Ishiwata, I. Yamada, yuhki Kohsaka, H. Takagi, M. Takano. Single Crystal Growth of Transition Metal Oxides at High Pressures of Several GPa, Physica C,, Vol. 392-396, Part I, 22-28, 2003.

国内会議発表 (査読なし・不明)

• 森田 洋輔, 高野 幹夫, 須田山 貴亮, 田久保 耕, 溝川 貴司, 山田 幾也, 白木 宏, 齊藤 高志, 東 正樹, 島川 祐一. 24aPS-78 Aサイトダブルペロブスカイト(Ca,Na)Cu_3V4O_<12>の光電子分光(24aPS ポスターセッション(低温),領域8(強相関係:高温超伝導,強相関f電子系など)), 日本物理学会講演概要集, 一般社団法人 日本物理学会, Vol. 63, No. 0, 2008.
• 森田 洋輔, 須田山 貴亮, 田久保 耕, 溝川 貴司, 山田 幾也, 白木 宏, 東 正樹, 島川 祐一, 高野 幹夫. 22aWG-7 Aサイトダブルペロブスカイト(Ca,Y)Cu_3Co4O_<12>の光電子分光(Co酸化物,熱電材料,領域8,強相関係:高温超伝導,強相関f電子系など), 日本物理学会講演概要集, 一般社団法人 日本物理学会, Vol. 62, No. 0, 2007.

その他の論文・著書など

• 東正樹, 齊藤高志, 山田幾也, 島川祐一, 高野幹夫. 放射光Ｘ線その場観察に基づく高圧相遷移金属酸化物の単結晶育成, 放射光, Vol. 19, No. 5, pp. 304-313, 2006.
• 東正樹, 高田和英, 齊藤高志, 山田幾也, 島川祐一, 高野幹夫. 機能性酸化物材料探索の新展開, 高圧力の科学と技術, Vol. 15, No. 4, pp. 292-302, 2005.
• 東正樹, 幸坂祐生, 山田幾也, Belik Alexei, 高木英典, 高野幹夫. 高圧下での酸化物単結晶育成と新物質探索, 応用物理, Vol. 74, No. 1, pp. 27-31, 2005.
• 東正樹, 齊藤高志, 新高誠司, 石渡晋太郎, 神田浩周, 山田幾也, 高野幹夫, 内海渉. 放射光Ｘ線回折を利用した高圧合成研究, 固体物理, Vol. 38, No. 2, pp. 141-150, 2003.

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