論文

• Zhao Pan, Sergey A. Nikolaev, Jie Zhang, Maocai Pi, Mengqi Ye, Qiumin Liu, Xubin Ye, Xiao Wang, Takumi Nishikubo, Shogo Kawaguchi, Masaki Azuma, Youwen Long. Extend the scope of negative thermal expansion in PbTiO₃-based perovskites, Applied Physics Letters, 126, 7, 071901, Feb. 2025.
• Hajime Yamamoto, Takumi Nishikubo, Shintaro Kobayashi, Kazuki Takahashi, Masaki Azuma, Shogo Kawaguchi, Tadashi Abukawa. ZnVO₃: an ilmenite-type vanadium oxide hosting robust V-V dimers, Dalton Transactions, 53, 39, 16195-16201, Sept. 2024.
• Zhao Pan, Zhengli Liang, Xiao Wang, Yue-Wen Fang, Xubin Ye, Zhehong Liu, Takumi Nishikubo, Yuki Sakai, Xi Shen, Qiumin Liu, Shogo Kawaguchi, Fei Zhan, Longlong Fan, Yong-Yang Wang, Chen-Yan Ma, Xingxing Jiang, Zheshuai Lin, Richeng Yu, Xianran Xing, Masaki Azuma, Youwen Long. Mixed anion control of enhanced negative thermal expansion in the oxysulfide of PbTiO₃, Materials Horizons, 11, 5394-5401, Aug. 2024.
• Lei Hu, Yingcai Zhu, Yue-Wen Fang, Masayuki Fukuda, Takumi Nishikubo, Zhao Pan, Yuki Sakai, Shogo Kawaguchi, Hena Das, Akihiko Machida, Tetsu Watanuki, Shigeo Mori, Koshi Takenaka, Masaki Azuma. Origin and Absence of Giant Negative Thermal Expansion in Reduced and Oxidized Ca₂RuO₄, Chemistry of Materials, 33, 19, Sept. 2021.
• 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.
• 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.
• Hayato Ishizaki, Hajime Yamamoto, Takumi Nishikubo, Yuki Sakai, Shogo Kawaguchi, Keisuke Yokoyama, Yoichi Okimoto, Shin-ya Koshihara, Takafumi Yamamoto, Masaki Azuma. Robust Giant Tetragonal Distortion Coupled with High-Spin Co3+ in Electron-Doped BiCoO3, Inorganic Chemistry, vol. 58, p. 16059-16064, Nov. 2019.

国際会議発表 (査読有り)

• Takumi Nishikubo, Takashi Imai, Yuki Sakai, Masaichiro Mizumaki, Shogo Kawaguchi, Norihiro Oshime, Ayumu Shimada, Kento Sugawara, Kenji Ohwada, Akihiko Machida, Tetsu Watanuki, Kosuke Kurushima, Shigeo Mori, Takashi Mizokawa, Masaki Azuma. Domain Structure Observation and Design of Phase Transition-type Negative Thermal Expansion Materials, 15th International Symposium on Ferroic Domains & Micro- to Nano-scopic Structures (ISFD-15), 2022.

国内会議発表 (査読なし・不明)

• 小菅 大輝, 河口 彰吾, 別府 孝介, 細川 三郎, 東 正樹, 山本 隆文. 時分割 XRD による SrCrO _3–δ におけるトポケミカル反応の観察, 日本セラミックス協会 第35回秋季シンポジウム, 2022.

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