Journal Paper

• Wakazaki Shogo, Nishikubo Takumi, Sakai Yuki, Shigematsu Kei, Das Hena, Zhang Depei, Zhang Qiang, Matsuda Masaaki, Azuma Masaki. Stabilized Charge, Spin, and Orbital Ordering by the 6s² Lone Pair in Bi_0.5Pb_0.5MnO₃, INORGANIC CHEMISTRY, 59, 18, 13390-13397, Sept. 2020.
• Yamamoto Hajime, Sekikawa Satoru, Taniguchi Haruka, Matsukawa Michiaki, Shigematsu Kei, Honda Takashi, Yamauchi Kunihiko, Ikeda Kazutaka, Otomo Toshiya, Sakakura Terutoshi, Azuma Masaki, Nimori Shigeki, Noda Yukio, Kimura Hiroyuki. Reversible thermally controlled spontaneous magnetization switching in perovskite-type manganite, APPLIED PHYSICS LETTERS, Volume 117, Issue 11, Sept. 2020.
• Md SAIDUZZAMAN, Khandaker Monower HOSSAIN, Nobuhiro KUMADA, Sayaka YANAGIDA, Takahiro TAKEI, Yuji HANADA, Masanori NAGAO, Masaki AZUMA. Hydrothermal synthesis and crystal structure of a mixed-valence pyrochlore-type strontium bismuthate, (Sr_0.75Bi_0.25)₂Bi₂O_6.83, JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, Volume 128, Issue 9, 660-663, Sept. 2020.
• Masayuki Fukuda, Takumi Nishikubo, Zhao Pan, Yuki Sakai, Mao-Hua Zhang, Shogo Kawaguchi, Hongwu Yu, Yoichi Okimoto, Shin-ya Koshihara, Mitsuru Itoh, Jürgen Rödel, Masaki Azuma. Enhanced Spontaneous Polarization by V⁴⁺ Substitution in a Lead-Free Perovskite CaMnTi₂O₆, INORGANIC CHEMISTRY, Volume 59, Issue 16, 11749–11756, Aug. 2020.
• Mitsuru Nitta, Nobuaki Nagao, Yuki Nomura, Taku Hirasawa, Yuki Sakai, Takahiro Ogata, Masaki Azuma, Shuki Torii, Toru Ishigaki, Yasuhisa Inada. High-Brightness Red-Emitting Phosphor La₃(Si,Al)₆(O,N)₁₁:Ce³⁺ for Next-Generation Solid-State Light Sources, ACS APPLIED MATERIALS & INTERFACES, Volume 12, Issue 28, 31652–31658, July 2020.
• 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.
• Yoshitaka Nakamura, Yuki Sakai, Masaki Azuma, Shin-ichi Ohkosh. Long-term heat-storage ceramics absorbing thermal energy from hot water, SCIENCE ADVANCES, Volume 6, Issue 27, July 2020.
• Kei Shigematsu, Haruki Shimizu, Marin Katsumata, Keisuke Shimizu, Hajime Yamamoto, Ko Mibu, Masaki Azuma. Stable electric polarization switching accompanied by magnetization reversal in B-site-substituted multiferroic BiFe_0.9Co_0.1O₃ thin films, APPLIED PHYSICS EXPRESS, 13, 7, June 2020.
• Masaki Ozeki, Victoria Warne-Lang, Hirofumi Tsukasaki, Yuki Sakai, Naoyuki Katayama, Yoshihiko Okamoto, Masaki Azuma, Shigeo Mori, Koshi Takenaka. Annealing effect on local structure and negative thermal expansion of antiperovskite manganese nitride fine particles, APPLIED PHYSICS EXPRESS, 13, 7, June 2020.
• Hayato Ishizaki, Yuki Sakai, Takumi Nishikubo, Zhao Pan, Kengo Oka, Hajime Yamamoto, Masaki Azuma. Negative Thermal Expansion in Lead-Free La-Substituted Bi_0.5Na_0.5VO₃, CHEMISTRY OF MATERIALS, 32, 11, 4832–4837, June 2020.
• Hongwu Yu, Kou Takubo, Tadahiko Ishikawa, Shin-ya Koshihara, Masaki Hada, Toru Asaka, Keita Ozawa, Kei Shigematsu, Masaki Azuma, Yoichi Okimoto. Ultrafast Nonlinear Spectroscopy in (111) Oriented Bismuth Ferrite Oxide, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 89, 6, May 2020.
• Yoshihiro Kusano, Shuji Kawasaki, Jun Takada, Masaki Azuma. Synthesis and microstructure of single-crystalline cobalt oxyhydroxide and topotactic transformation to cobalt oxide, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 103, 7240–7246, Apr. 2020.
• Zhao Pan, Takumi Nishikubo, Yuki Sakai, Takafumi Yamamoto, Shogo Kawaguchi, Masaki Azuma. Observation of Stabilized Monoclinic Phase as a “Bridge” at the Morphotropic Phase Boundary between Tetragonal Perovskite PbVO_{3 and Rhombohedral BiFeO3}, CHEMISTRY OF MATERIALS, Vol. 32, No. 8, pp. 3615-3620, Apr. 2020.
• 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. Sequential Spin State Transition and Intermetallic Charge Transfer in PbCoO₃, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 142, 12, 5731–5741, Mar. 2020.
• Blair W. Lebert, Hajime Yamamoto, Masaki Azuma, Rolf Heid, Satoshi Tsutsui, Hiroshi Uchiyama, Alfred Q. R. Baron, Benoît Baptiste, Matteo d'Astuto. Doping-induced in-plane anisotropy of bond-stretching phonon softening in oxychloride Ca ₂ − x CuO ₂ Cl ₂ compounds, PHYSICAL REVIEW B, 101, 2, Jan. 2020.
• Withanage ISURU UDAKARA WITHANAGE, Nobuhiro KUMADA, Takahiro TAKEI, Sayaka YANAGIDA, Kiyoharu TADANAGA, Akira MIURA, Nataly Carolina ROSERO-NAVARRO, Masaki AZUMA. Electrical properties of pyrochlore-type silver tantalate and fluorite-type silver niobate, JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 128, 1, 46-50, Jan. 2020.

Domestic Conference (Reviewed)

• Shogo Wakazaki, Takumi Nishikubo, Kei Shigematsu, Takafumi Yamamoto, Masaki Azuma, Naoki Matsui, Kouta Suzuki, Ryoji KANNO, Jalem Randy, 館山佳尚. 層状逆ペロブスカイト型Li4O(Br,F)2の高圧合成とLiイオン伝導, 第46回固体イオニクス会, Dec. 2020.

Domestic Conference (Not reviewed / Unknown)

• Kou Takubo, Sichen Jin, Masaki Hada, Masaki Azuma, Yasuhiko Hayashi, 桑原真人, 宮坂等, 石原純夫, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara. 光誘起構造ダイナミクス測定のためのテーブルトップフェムト秒時間分解電子線回折装置の開発, 日本物理学会, Sept. 2020.

Patent

• Masaki Azuma, Hajime Yamamoto. 圧電体. Patent. Published. 国立大学法人東京工業大学, 地方独立行政法人神奈川県立産業技術総合研究所（KISTEC）. 2020/03/13. 特願2020-044500. 2021/09/24. 特開2021-143114. 2021.

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