Publicatioins

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2018

Pr/Ba cation-disordered perovskite Pr2/3Ba1/3CoO3-δ as a new bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions
Wenrui Zhang, Masahiro Shiraiwa, Nannan Wang, Tingli Ma, Kotaro Fujii, Eiki Niwa and Masatomo Yashima
J. Ceram. Soc. Jpn., in press.
Discovery of Oxide-Ion Conductors with a New Crystal Structure,
BaSc2-xAxSi3O10-x/2 (A: Mg, Ca) by Screening Sc-Containing Oxides through the Bond-Valence Method and Experiments
Eiki Niwa, Masatomo Yashima
A Systematic Evaluation of the Role of the Lanthanide Elements in Complex Functional Oxides; Implications for Energy Conversion Devices
Ji Wu, Kotaro Fujii, Masatomo Yashima, Aleksandar Staykov, Taner Akbay, Tatsumi Ishihara, John A. Kilner
Undoped Layered Perovskite Oxynitride Li2LaTa2O6N for Photocata-lytic CO2 Reduction with Visible Light
Takayoshi Oshima, Tom Ichibha, Ken Sinkou Qin, Kanemichi Muraoka, Junie Jhon M. Vequizo, Keisuke Hibino, Ryo Kuriki, Shunsuke Yamashita, Kenta Hongo, Tomoki Uchiyama, Kotaro Fujii, Daling Lu, Ryo Maezono, Akira Yamakata, Hideki Kato, Koji Kimoto, Masatomo Yashi-ma, Yoshiharu Uchimoto, Masato Kakihana, Osamu Ishitani, Hiroshi Kageyama, Kazuhiko Maeda
A new structure family of oxide-ion conductor Ca0.8Y2.4Sn0.8O6 discovered by a combined technique of the bond-valence method and experiments
Ryota Inoue, Kotaro Fujii, Masahiro Shiraiwa, Eiki Niwa, Masatomo Yashima
High oxide-ion conductivity by the overbonded channel oxygens in Si-deficient La9.565(Si5.8260.174)O26 apatite without interstitial oxygens
Kotaro Fujii, Masatomo Yashima, Keisuke Hibino, Masahiro Shiraiwa, Koichiro Fukuda, Susumu Nakayama, Nobuo Ishizawa, Takayasu Hanashima, Takashi Ohhara
Redshift and thermal quenching of Ce3+ emission in (Gd,Y)3(Al, Si)5(O, N)12 oxynitride garnet phosphors
Kazuki Asami, Jumpei Ueda, Masahiro Shiraiwa, Kotaro Fujii, Masatomo Yashima, Setsuhisa Tanabe
Opt. Mater., in press.
Experimental visualization of oxide-ion diffusion paths in pyrochlore-type Yb2Ti2O7
Wataru Uno, Kotaro Fujii, Eiki Niwa, Shuki Torii, Ping Miao, Takashi Kamiyama, Masatomo Yashima
Crystal structure and electrical conductivity of BaR2ZnO5 (R = Sm, Gd, Dy, Ho, and Er) – A new structure family of oxide-ion conductors
Keigo Nakamura, Kotaro Fujii, Eiki Niwa, Masatomo Yashima
Synthesis, Crystal Structure and Optical Properties of New Layered Perovskite Scandium Oxychlorides: Sr2ScO3Cl, Sr3Sc2O5Cl2, and Ba3Sc2O5Cl2
Yu Su, Yoshihiro Tsujimoto, Kotaro Fujii, Makoto Tatsuta, Kengo Oka, Masatomo Yashima, Hiraku Ogino, Kazunari Yamaura
A New Precursor Route Using a Compositionally Flexible Layered Oxide and Nanosheet for Improved Nitrogen Doping and Photocatalytic Activity
Kazuhiko Maeda, Yuki Tokunaga, Keisuke Hibino, Kotaro Fujii, Miharu Eguchi, Shintaro Ida, Masatomo Yashima
High pressure synthesis of hydride-fluoride pyrochlore NaCaMg2F7–xHx
Kazunari Arai, Yoji Kobayashi, Ya Tang, Yusuke Tsutsui, Daisuke Sakamaki, Takafumi Yamamoto, Kotaro Fujii, Masatomo Yashima, Shu Seki, Hiroshi Kageyama
Single crystal growth of Sillén–Aurivillius perovskite oxyhalides Bi4NbO8X (X = Cl, Br)
Chengchao Zhong, Fumitaka Takeiri, Daichi Kato, Kotaro Fujii, Masatomo Yashima, Yasuhiro Fujii, Akitoshi Koreeda, Cédric Tassel, Ryu Abe, Hiroshi Kageyama
A Quasi-two-dimensional metallic behavior in BaVO3–xHx (0.3 ≤ x ≤ 0.9) with Face- and Corner-sharing Octahedra
Takafumi Yamamoto, Kazuki Shitara, Shunsaku Kitagawa, Akihide Kuwabara, Masahiro Kuroe, Kenji Ishida, Masayuki Ochi, Kazuhiko Kuroki, Kotaro Fujii, Masatomo Yashima, Craig M. Brown, Hiroshi Takatsu, Tassel Cedric, Hiroshi Kageyama
Crystal structure of blue-colored ceria during redox reactions in a hydrogen atmosphere
Takeshi Matsukawa, Akinori Hoshikawa, Eiki Niwa, Masatomo Yashima, Toru Ishigaki