Research theme for competitive and other funds (10):
2024 - 2027 アニオン組成制御による負熱膨張材料の開発と物質設計指針の確立
2021 - 2024 リジッドな結晶骨格を持ったフッ化物イオン伝導体の開発
2021 - 2023 6s電子のリバイスドローンペアー効果に基づいた新規可視光応答触媒の開発
2019 - 2021 Pb,Biを含む酸フッ化物における特異的な物性の開拓と起源の解明
2016 - 2020 Investigation of the anion order in Pb/Bi containing mixed anion compounds
2017 - 2019 簡便かつ安価な合成法を用いた新規Pb,Bi含有酸フッ化物の物質探索
2016 - 2019 Clarification of s-d interorbital charge distribution change in Bi and Pb-perovskites and the application to giant negative thermal expansion materials
2014 - 2016 Investigation of the exotic properties originated from a large tetragonal distrotion
2011 - 2012 電荷移動・強誘電転移を利用した巨大負の熱膨張材料の開発
2009 - 2010 新奇な元素選択による非鉛系強誘電・圧電材料の探索
Show all
Papers (93):
Ryusuke Mizuochi, Yuuki Sugawara, Kengo Oka, Yoshiyuki Inaguma, Shunsuke Nozawa, Toshiyuki Yokoi, Takeo Yamaguchi, Kazuhiko Maeda. Iron-Based Layered Perovskite Oxyfluoride Electrocatalyst for Oxygen Evolution: Insights from Crystal Facets with Heteroanionic Coordination. Journal of the American Chemical Society. 2024
Takehiro Koike, Hena Das, Kengo Oka, Yoshihiro Kusano, Fernando Cubillas, Francisco Brown Bojorqez, Victor Emmanuel Alvarez-Montano, Shigekazu Ito, Kei Shigematsu, Hayato Togano, et al. Pressure-Induced YbFe2O4-Type to Spinel Structural Change of InGaMgO4. Solids. 2024
Tatsuya Yamaguchi, Mizuki Furo, Yuki Sakai, Takumi Nishikubo, Hajime Hojo, Masaki Azuma, Kengo Oka, Daisuke Mori, Yoshiyuki Inaguma, Masaichiro Mizumaki, et al. Mechanism of intermetallic charge transfer and bond disproportionation in BiNiO3 and PbNiO3 revealed by hard x-ray photoemission spectroscopy. Physical Review B. 2024. 109. 20
Kengo OKA, Naoki NOMA, Mitsunobu IWASAKI. Reduction of a Band Gap and Visible-Light Photocatalytic Activity Induced by the Interaction between 6s and 2p Orbitals known as Revised Lone Pair Model. Journal of the Japan Society of Colour Material. 2023. 96. 5. 176-179
K. Oka, T. Ogawa, H. Yamamoto, C. Sakaguchi, R. Gallage, N. Kobayashi, M. Azuma. Compaction of α”-Fe16N2 particles by high-pressure treatment at several gigapascals. Scripta Materialia. 2023. 229. 115390-115390
草野大志, 東原巧実, 渡邉美寿貴, 大石克嘉, 岡研吾. Introduction of electron carriers into Nd2CuO4 oxide with T’ structure by Ce4+ or F- doping. 日本セラミックス協会年会講演予稿集(CD-ROM). 2020. 2020
岡研吾, 林直顕, 林直顕, 草野圭弘, 越智正之, 黒木和彦, 青山拓也, 大石克嘉, 高野幹夫, 石井悠衣, et al. Spin reorientation induced by altered magnetic HOMO-LUMO interaction in Pb3Fe2O5F2. 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM). 2020. 33rd