東 正樹

材料・デバイス研究

Masaki Azuma東 正樹

教授

固体化学固体物理材料科学

研究プロジェクト

  • コバルト酸鉛の合成に世界で初めて成功し、新規の電荷分布を発見(2017.03)

トピックス

  • コバルト酸鉛の合成に関する論文が米国化学会誌「Journal of the American Chemical Society」オンライン版に掲載されました。

  • マルチフェロイクス材料に関する論文がAdvanced Materialsに掲載され,日刊工業新聞で報道されました

  • 非鉛圧電体の分極回転に関する論文がAdvanced Materialsに掲載され,日経産業新聞、日刊工業新聞、科学新聞で報道されました

2016-

東京工業大学科学技術創成研究院教授

2010-2016

東京工業大学 応用セラミックス研究所 教授

2005-2010

京都大学 化学研究所 准教授

2004-2005

京都大学 化学研究所 助教授

1995-2004

京都大学 化学研究所 助手

2007

Thomson Scientific Research Front Award 2007

2005

文部科学大臣表彰若手科学者賞

2002

粉体粉末冶金協会研究進歩賞

1999

京都大学化学研究所所長賞

1997

井上研究奨励賞

2020

Enhanced Spontaneous Polarization by V4+ Substitution in a Lead-Free Perovskite CaMnTi2O6, Masayuki Fukuda, Takumi Nishikubo, Zhao Pan, Yuki Sakai, Mao-Hua Zhang, Shogo Kawaguchi, Hongwu Yu, Yoichi Okimoto, Shin-ya Koshihara, Mitsuru Itoh, Jürgen Rödel, and Masaki Azuma, Inorg. Chem. 2020, 59, 16, 11749–11756

2020

Stabilized Charge, Spin, and Orbital Ordering by the 6s2 Lone Pair in Bi0.5Pb0.5MnO3, Shogo Wakazaki, Takumi Nishikubo, Yuki Sakai, Kei Shigematsu, Hena Das, Depei Zhang, Qiang Zhang, Masaaki Matsuda, and Masaki Azuma, Inorg. Chem. 2020, 59, 18, 13390–13397

2020

Sequential Spin State Transition and Intermetallic Charge Transfer in PbCoO3, Zhehong Liu, Yuki Sakai, Junye Yang, Wenmin Li, Ying Liu, Xubin Ye, Shijun Qin, Jinming Chen, Stefano Agrestini, Kai Chen, Sheng-Chieh Liao, Shu-Chih Haw, Francois Baudelet, Hirofumi Ishii, Takumi Nishikubo, Hayato Ishizaki, Tatsuru Yamamoto, Zhao Pan, Masayuki Fukuda, Kotaro Ohashi, Kana Matsuno, Akihiko Machida, Tetsu Watanuki, Saori I. Kawaguchi, Angel M. Arevalo-Lopez, Changqing Jin, Zhiwei Hu, J. Paul Attfield, Masaki Azuma & Youwen Long. J. Am. Chem. Soc. 2020, 142, 12, 5731–5741

2020

Doping-induced in-plane anisotropy of bond-stretching phonon softening in oxychloride Ca2−xCuO2Cl2 compounds, Blair W. Lebert, Hajime Yamamoto, Masaki Azuma, Rolf Heid, Satoshi Tsutsui , Hiroshi Uchiyama, Alfred Q. R. Baron, Benoît Baptiste, and Matteo d’Astuto, PHYSICAL REVIEW B 101, 020506(R) (2020)

2019

Polar–Nonpolar Phase Transition Accompanied by Negative Thermal Expansion in Perovskite-Type Bi1–xPbxNiO3, Yuki Sakai, Takumi Nishikubo, Takahiro Ogata, Hayato Ishizaki, Takashi Imai, Masaichiro Mizumaki, Takashi Mizokawa Orcid, Akihiko Machida, Tetsu Watanuki, Keisuke Yokoyama, Yoichi Okimoto, Shin-ya Koshihara, Hena Das and Masaki Azuma, Chem. Mater.2019, 31, 13, 4748-4758

2019

Strain Manipulation of Magnetic Anisotropy in Room-Temperature Ferrimagnetic Quadruple Perovskite CeCu3Mn4O12,  Kei Shigematsu, Keisuke Shimizu, Kazumasa Yamamoto, Takumi Nishikubo, Yuki Sakai, Sergey A. Nikolaev, Hena Das, and Masaki Azuma, ACS Appl. Electron. Mater 2019, 1, 12, 2514-2521

2019

Frustrated magnetic interactions in an S = 3/2 bilayer honeycomb lattice compound Bi3Mn4O12(NO3), M. Matsuda , S. E. Dissanayake, D. L. Abernathy, Y. Qiu J. R. D. Copley, N. Kumada, M. Azuma, Phys. Rev. B 100, 134430

2019

Melting of dxy orbital ordering accompanied by suppression of giant tetragonal distortion and insulator to metal transition in Cr substituted PbVO3, Takahiro Ogata, Yuki Sakai, Hajime Yamamoto, Satyanarayan Patel, Jurij Koruza, Zhao Pan, Takumi Nishikubo, Jürgen Rödel, and Masaki Azuma, Chem. Mater. 2019, 31, 4, 1352–1358

2019

Hydrothermal Synthesis of Pyrochlore-Type Pentavalent Bismuthates Ca2Bi2O7 and Sr2Bi2O7, Md Saiduzzaman, Takahiro Takei, Sayaka Yanagida, Nobuhiro Kumada, Hena Das, Hirokazu Kyokane, Shogo Wakazaki, Masaki Azuma, Chikako Moriyoshi, and Yoshihiro Kuroiwa, Inorganic Chemistry, 2019, 58 (3), pp 1759–1763

2018

Na1/2Bi1/2VO3 and K1/2Bi1/2VO3: New Lead-free Tetragonal Perovskites with Moderate c/a ratio, Hajime Yamamoto, Takahiro Ogata, Satyanarayan Patel, Jurij Koruza, Jürgen Rӧdel, Atanu Paul, Tanusri Saha-Dasgupta, Yuki Sakai, Mitsuru Itoh and Masaki Azuma, Chemistry of Materials, 2018, 30 (19), pp 6728–6736

2018

Formation of ZnO4 Tetrahedra and ZnO6 Octahedra in TeZnO3 Synthesized under High Pressure, Jianhong Dai, Xudong Shen, Zhehong Liu, Qing Zhao, Xiao Wang, Cheng Dong, Yuecheng Bian, Wei Ding, Zhigao Sheng, Masaki Azuma, and Youwen Long, Inogranic Chemistry, 57 (11), 6716–6721 (2018)

2018

Large spontaneous polarization in polar perovskites of PbTiO3-Bi(Zn1/2Ti1/2)O3, Zhao Pan, Xingxing Jiang, Jun Chen, Lei Hu, Hajime Yamamoto, Linxing Zhang, Longlong Fan, Xi’an Fan, Yawei Li, Guangqiang Li, Yang Ren, Zheshuai Lin, Masaki Azuma, Xianran Xing. Inorganic Chemistry Frontiers, Vol. 5, No. 6, pp. 1277-1281, Jun. 2018.

2017

Ferromagnetism at room temperature induced by spin structure change in BiFe1-xCoxO3thin films, H. Hojo, R. Kawabe, H. Yamamoto, K. Mibu, and M. Azuma, Adv. Mater. 2017, 1603131.

2016

Enhanced piezoelectric response due to polarization rotation in cobalt-substituted BiFeO3epitaxial thin films , K. Shimizu, H. Hojo, Y. Ikuhara, and M. Azuma, Adv. Mater., 28, (2016) 8639

2011

Colossal negative thermal expansion in BiNiO3 induced by intermetallic charge transfer, M. Azuma, W-T Chen, H. Seki, M. Czapsli, S. Olga, K. Oka, M. Mizumaki, T. Watanuki, N. Ishimatsu, N. Kawamura, S. Ishiwata, M. G. Tucker, Y. Shimakawa, and J. P. Attfield,, Nature Communications, 2 (2011) 347

1994

Observation of a Spin Gap in SrCu2O3 Comprising Spin-1/2 Quasi-1D Two-Leg Ladders, M. Azuma, Z. Hiroi, M. Takano, K. Ishida and Y. Kitaoka, Phys. Rev. Lett., 73, 25 (1994) 3463-3466.