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Google Scholar Citations

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​2023​​​​

  • "Electropositive Metal Doping into Lanthanum Hydride for H– Conducting Solid Electrolyte Use at Room Temperature"
    Yoshiki Izumi, Fumitaka Takeiri, Akihide Kuwabara, Masato Hagihala, Takashi Saito, Takashi Kamiyama, Genki Kobayashi
    Adv. Energy. Mater. 13, 2301993 (2023).   DOI: 10.1002/aenm.202301993   Press Release
     

  • "High H– Conductivities along the ab-Planes of La2LiHO3 Epitaxial Thin Films"
    Yuki Sasahara, Takashi Hirose, Masataka Yoshimoto, Naoki Matsui, Shigeru Kobayashi, Hiroki Ubukata, Fumitaka Takeiri, Kota Suzuki, Masaaki Hirayama, Kazunori Nishio, Ryota Shimizu, Ryoji Kanno, Genki Kobayashi, and Taro Hitosugi
    Cryst. Growth Des. 23, 7103-7108 (2023).   DOI: 10.1021/acs.cgd.3c00376
     

  • "A new family of anti-perovskite oxyhydrides with tetrahedral GaO4 polyanions"
    Nur Ika Puji Ayu, Fumitaka Takeiri*, Takafumi Ogawa, Akihide Kuwabara, Masato Hagihala, Takashi Saito,Takashi Kamiyama, Genki Kobayashi*
    Dalton Trans. 52, 15420-15425 (2023).   DOI: 10.1039/D3DT01555F
     

2022

  • "Stabilization of a high H−-conducting phase via K doping of Ba–Li oxyhydride"
    Kei Okamoto, Fumitaka Takeiri, Yumiko Imai, Masao Yonemura, Takashi Saito, Kazutaka Ikeda, Toshiya Otomo,
    Takashi Kamiyama, Genki Kobayashi
    J. Mater. Chem. A, 10, 23023 (2022).   DOI: 10.1039/D2TA06278J
     

  • "Impact of Na Concentration on the Phase Transition Behavior and H− Conductivities in the Ba–Li–Na–H–O Oxyhydride System"
    Kei Okamoto, Fumitaka Takeiri, Yumiko Imai, Masao Yonemura, Takashi Saito, Kazutaka Ikeda, Toshiya Otomo,
    Takashi Kamiyama, Genki Kobayashi
    Adv. Sci. 2203541 (2022).  DOI: 10.1002/advs.202203541
     

  • "Trihalide Mixing by Size-flexible H– ions in Layered Ba2H3(Cl,Br,I)"
    Hiroki Ubukata, Fumitaka Takeiri, Cedric Tassel, Shintaro Kobayashi, Shogo Kawaguchi, Takashi Saito,
    Takashi Kamiyama, Shunsuke Kobayashi, Genki Kobayashi, Hiroshi Kageyama
    Chem. Mater. 34, 5654-5662 (2022).  DOI: 10.1021/acs.chemmater.2c01004
     

  • "Hydride-ion-conducting K2NiF4-type Ba–Li oxyhydride solid electrolyte"
    Fumitaka Takeiri#, Akihiro Watanabe# (#contributed equally), Dominic Bresser, Sandrine Lyonnard, Bernhard Frick, Kei Okamoto, Asad Ali, Yumiko Imai, Masako Nishikawa, Masao Yonemura, Kazutaka Ikeda, Toshiya Otomo, Ryoji Kanno, Genki Kobayashi
    Nat. Mater. 21, 325-330 (2022).   DOI: 10.1038/s41563-021-01175-0   Press Release
     

  • "Recent Progress on Mixed-Anion Materials for Energy Applications"
    Kazuhiko Maeda, Fumitaka Takeiri, Genki Kobayashi, Satrou Matsuishi, Hiraku Ogino, Katsuro Hayashi, Takao Mori, Yoshiharu Uchimoto, Setsuhisa Tanabe, Tetsuya Hasegawa, Nobuhito Imanaka, Hiroshi Kageyama
    Bull. Chem. Soc. Jpn, 95, 26–37 (2022).  DOI: 10.1246/bcsj.20210351
     

2021​​

  • "Effects of mechanical grinding on the phase behavior and anhydrous proton conductivity of imidazolium hydrogen succinate"
    Shun Dekura, Yoshida Sunairi, Kei Okamoto, Fumitaka Takeiri, Genki Kobayashi, Yuta Hori, Yasuteru Shigeta,
    Hatsumi Mori
    Solid State Ionics, 372, 115775 (2021).   DOI: 10.1016/j.ssi.2021.115775
     

  • "Direct synthesis of barium titanium oxyhydride for use as a hydrogen permeable electrode"
    Tasuku Uch    imura, Fumitaka Takeiri, Kei Okamoto, Takashi Saito, Takashi Kamiyama, Genki Kobayashi
    J. Mater. Chem. A, 9, 20371-20374 (2021).   DOI: 10.1039/D1TA05783A
     

  • "H–導電性酸水素化物の合成法"
    竹入史隆, 小林玄器
    セラミックス  56, 536-539 (2021).
     

  • "Anion Ordering Enables Fast H– Conduction at Low Temperatures"
    Hiroki Ubukata, Fumitaka Takeiri, Kazuki Shitara, Cédric Tassel, Takashi Saito, Takashi Kamiyama, Thibault Broux, Akihide Kuwabara, Genki Kobayashi, Hiroshi Kageyama
    Sci. Adv. 7, eabf7883 (2021). DOI: 10.1126/sciadv.abf7883       Press Release
     

  • "層状ペロブスカイト酸水素化物のサイト選択性とH–導電"
    竹入史隆, 小林玄器
    結晶学会誌  63(2), 73-74 (2021).      DOI: 10.5940/jcrsj.63.73
     

2020

  • "Strain-induced creation and switching of anion vacancy layers in perovskite oxynitrides"
    Takafumi Yamamoto, Akira Chikamatsu, Shunsaku Kitagawa, Nana Izumo ,Shunsuke Yamashita, Hiroshi Takatsu, Masayuki Ochi, Takahiro Maruyama, Morito Namba, Wenhao Sun, Takahide Nakashima, Fumitaka Takeiri, Kotaro Fujii, Masatomo Yashima, Yuki Sugisawa, Masahito Sano, Yasushi Hirose, Daiichiro Sekiba, Craig Brown, Takashi Honda, Kazutaka Ikeda, Toshiya Otomo, Kazuhiko Kuroki, Kenji Ishida, Takao Mori, Koji Kimoto, Tetsuya Hasegawa, Hiroshi Kageyama
    Nat. Commun., 11, 5923 (2020). DOI: 10.1038/s41467-020-19217-7
     

  • "Synthesis and H– conductivity of a new Oxyhydride Ba2YHO3 with anion-ordered rock-salt layers"
    Haq Nawaz, Fumitaka Takeiri, Akihide Kuwabara, Masao Yonemura, Genki Kobayashi
    Chem. Commun. 56, 10373-10376. DOI: 10.1039/D0CC03638B
     

  • "Luminescent ionic liquid formed from a melted rhenium(V) cluster"
    Junichi Yanagisawa, Tomaki Hiraoka, Fumiya Kobayashi, Daisuke Saito, Masaki Yoshida, Masako Kato,  Fumitaka Takeiri, Genki Kobayashi, Masaaki Ohba, Leonard F. Lindoy, Ryo Ohtani, Shinya Hayami
    Chem. Commun., 56, 7957-7960 (2020).  DOI: 10.1039/D0CC02937H
     

  • "Topochemical Anion Insertion into One-dimensional Bi Channels in Bi2PdO4"
    Fumitaka Takeiri, Takeshi Yajima, Saburo Hosokawa, Yoshitaka Matsushita, Hiroshi Kageyama
    J. Solid State Chem. 286,     121273/1-5 (2020).  DOI: 10.1016/j.jssc.2020.121273
     

2019​

  • "Hydride Conductivity in an Anion-ordered Fluorite Structure LnHO with an Enlarged Bottleneck"
    Hiroki Ubukata, Thibault Broux, Fumitaka Takeiri, Kazuki Shitara, Hiroki Yamashita,  Akihide Kuwabara, Genki Kobayashi, Hiroshi Kageyama
    Chem. Mater, 31, 7360-7366 (2019).  DOI: 10.1021/acs.chemmater.9b01968
     

  • "High-pressure Polymorphs of LaHO with Anion Coordination Reversal"
    Thibault Broux, Hiroki Ubukata, Chris Pickard, Fumitaka Takeiri, Genki Kobayashi, Shogo Kawaguchi, Masao Yonemura, Yoshihiro Goto,     Cédric Tassel, Hiroshi Kageyama
    J. Am. Chem. Soc. 141, 8717-8720 (2019).  DOI: 10.1021/jacs.9b03320
     

  • "Ba2ScHO3: H– Conductive Layered Oxyhydride with H– Site Selectivity"
    Fumitaka Takeiri, Akihiro Watanabe, Akihide Kuwabara, Haq Nawaz, Nur Ika Puji Ayu, Masao Yonemura, Ryoji Kanno, Genki Kobayashi 
    Inorg. Chem. 58, 4431-4436 (2019).  DOI: 10.1021/acs.inorgchem.8b03593     Supplementary Cover
     

2018

  • "複合アニオン化合物の研究の魅力"
    竹入 史隆, 陰山 洋
    結晶学会誌  60(5,6), 240-245 (2018).  DOI: 10.5940/jcrsj.60.240    Cover Picture
     

  • "Chemical Pressure-Induced Anion Order-Disorder Transition in LnHO Enabled by Hydride Size Flexibility"
    Hiroki Yamashita, Thibault Broux, Yoji Kobayashi,  Fumitaka Takeiri, Hiroki Ubukata, Tong Zhu, Michael A. Hayward, Kotaro Fujii, Masatomo Yashima, Kazuki Shitara, Akihide Kuwabara, Taito Murakami, Hiroshi Kageyama
    J. Am. Chem. Soc. 140, 11170-11173 (2018).  DOI: 10.1021/jacs.8b06187
     

  • "AgFeOF2: A Fluorine-Rich Perovskite Oxyfluoride"
    Fumitaka Takeiri, Takafumi Yamamoto, Naoaki Hayashi, Saburo Hosokawa, Kazunari Arai, Jun Kikkawa, Kazutaka Ikeda, Takashi Honda, Toshiya Otomo, Cédric Tassel, Koji Kimoto, Hiroshi Kageyama
    Inorg. Chem. 57, 6686-6691 (2018).  DOI: 10.1021/acs.inorgchem.8b00500

 

  • "Single Crystal Growth of Sillén–Aurivillius Perovskite Oxyhalides Bi4NbO8X (X = Cl, Br)"
    Chengchao Zhong, Daichi Kato, Fumitaka Takeiri, Kotaro Fujii, Masatomo Yashima, Yasuhiro Fujii, Emily Nishiwaki, Akitoshi Koreeda, Cédric Tassel, Ryu Abe, Hiroshi Kageyama
    Inorganics 6, 41/1-8 (2018).  DOI: 10.3390/inorganics6020041
     

  • "A Gas-Reaction Apparatus Fabricated Using Readily Available Components for Demonstrating the Basic Function of Automotive Catalyst"
    Ryo Horikoshi, Fumitaka Takeiri, Yoji Kobayashi, Hiroshi Kageyama
    Chem. Educator 23, 31-34 (2018).  DOI: 
     

2017

  • "Promoted Hydride/Oxide Exchange in SrTiO3 by Introduction of Anion Vacancy via Aliovalent Cation Substitution"
    Fumitaka Takeiri, Kohei Aidzu, Takeshi Yajima,  Toshiaki Matsui, Takafumi Yamamoto, Yoji Kobayashi, James Hester, Hiroshi Kageyama
    Inorg. Chem. 56, 13035-13040 (2017).  DOI: 10.1021/acs.inorgchem.7b01845

 

  • "Suppression of H–/O2– Exchange by Incorporated Nitride Anions in the Perovskite Lattice"
    Fumitaka Takeiri, Takeshi Yajima,  Takafumi Yamamoto, Yoji Kobayashi, Toshiaki Matsui, James Hester, Hiroshi Kageyama
    J. Solid. State. Chem. 256, 33-37 (2017).  DOI: 10.1016/j.jssc.2017.08.02
     

  • "Illustrating the Basic Functioning of Mass Analyzers in Mass Spectrometers with Ball-Rolling Mechanisms"
    Ryo Horikoshi, Fumitaka Takeiri, Riho Mikita, Yoji Kobayashi, Hiroshi Kageyama
    J. Chem. Edu. 94, 1502-1506 (2017).  DOI: 10.1021/acs.jchemed.7b00297
     

  • "Hypervalent Bismuthides La3MBi5 (M = Ti, Zr, Hf): Absence of Superconductivity"
    Taito Murakami, Takafumi Yamamoto, Fumitaka Takeiri, Kousuke Nakano, Hiroshi Kageyama
    Inorg. Chem. 56, 5041-5045 (2017).  DOI: 10.1021/acs.inorgchem.7b00031
     

2016

  • "ZnTaO2N: Stabilized High-Temperature LiNbO3-type Structure"
    Yoshinori Kuno, Cédric Tassel, Koji Fujita, Dmitry Batuk, Artem M. Abakumov, Kazuki Shitara, Akihide Kuwabara, Hiroki Moriwake, Daichi Watabe, Clemens Ritter, Craig M. Brown, Takafumi Yamamoto,     Fumitaka Takeiri, Ryu Abe, Yoji Kobayashi, Katsuhisa Tanaka, Hiroshi Kageyama
    J. Am. Chem. Soc. 138, 15950-15955 (2016).  DOI: 10.1021/jacs.6b08635
     

  • "High-Pressure Synthesis of Layered Iron Oxyselenide BaFe2Se2O with Strong Magnetic Anisotropy"
    Fumitaka Takeiri, Yuki Matsumoto, Takafumi Yamamoto, Naoaki Hayashi, Zhi Li, Takami Tohyama, Cédric Tassel, Clemens Ritter, Yasuo Narumi, Masayuki Hagiwara, Hiroshi Kageyama
    Phys. Rev. B 94, 184426/1-6 (2016).  DOI: 10.1103/PhysRevB.94.184426
     

  • "Exploring the Gas Chemistry of Old Submarine Technologies Using Plastic Bottles as Reaction Vessels and Models"
    Ryo Horikoshi, Fumitaka Takeiri, Yoji Kobayashi, Hiroshi Kageyama
    J. Chem. Edu. 93, 1411-1414 (2016).  DOI: 10.1021/acs.jchemed.5b00732
     

  • "High Pressure Synthesis of a Manganese Oxyhydride with Partial Anion Order"
    Cédric Tassel, Yoshihiro Goto, Daichi Watabe, Ya Tang, Hongcheng. Lu, Yoshinori Kuno, Fumitaka Takeiri, Takafumi Yamamoto, Tomoko Aharen, Craig M. Brown, James Hester, Yoji Kobayashi, and Hiroshi Kageyama
    Angew. Chem. Int. Ed. 55, 9667-9670 (2016).  DOI: 10.1002/ange.201605123
     

  • "Topochemical Nitridation with Anion Vacancy-assisted N3–/O2– Exchange"
    Riho Mikita, Tomoko Aharen, Takafumi Yamamoto, Fumitaka Takeiri, Tang Ya, Wataru Yoshimune, Koji Fujita, Suguru Yoshida, Katsuhisa Tanaka, Dmitry Batuk, Artem M. Abakumov, Craig M. Brown, Yoji Kobayashi, Hiroshi Kageyama
    J. Am. Chem. Soc. 138, 3211-3217 (2016).  DOI: 10.1021/jacs.6b00088
     

2015

  • "A Labile Hydride Strategy for the Synthesis of Heavily Nitridized BaTiO3"
    Takeshi Yajima#, Fumitaka Takeiri# (#contributed equally), Kohei Aidzu, Hirofumi Akamatsu, Koji Fujita, Masatoshi Ohkura, Wataru Yoshimune, Shiming Lei, Venkatraman Gopalan, Katsuhisa Tanaka, Craig M. Brown, Mark A. Green, Takafumi Yamamoto, Yoji Kobayashi, Hiroshi Kageyama
    Nat. Chem. 7, 1017-1023 (2015).  DOI: 10.1038/nchem.2370        Press Release
     

2014

  • "Superconductivity in a Hypervalent Compound Ba2Bi(Sb1-xBix)2 with a Square-Honeycomb Lattice"
    Takeshi Yajima, Fumitaka Takeiri, Yasumasa Nozaki, Zhi Li, Takami Tohyama, Mark A. Green, Yoji Kobayashi,  Hiroshi Kageyama
    J. Phys. Soc. Jpn. 83, 073705/1-5 (2014).  DOI: 10.7566/JPSJ.83.073705

     

​2013

  • "Tc Enhancement by Aliovalent Anionic Substitution in Supreconducting BaTi2(Sb1-xSnx)2O"
    Kousuke Nakano, Takeshi Yajima, Fumitaka Takeiri, Mark A. Green, Jamas Hester, Yoji Kobayashi, Hiroshi Kageyama
    J. Phys. Soc. Jpn. 82, 074707/1-5 (2013).  DOI: 10.7566/JPSJ.82.074707
     

  • "Two Superconducting Phases in the Isovalent Solid Solutions BaTi2Pn2O (Pn = As, Sb, and Bi)"
    Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, Yasumasa Nozaki, Yoji Kobayashi, Hiroshi Kageyama
    J. Phys. Soc. Jpn. 82, 033705/1-4 (2013).  DOI: 10.7566/JPSJ.82.033705
     

  • "Synthesis and Physical Properties of the New Bismuthides BaTi2Bi2O and (SrF)2Ti2Bi2O with a d1 Square Net"
    Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, James Hester, Takafumi Yamamoto, Yoji Kobayashi, Naruki Tsuji, Jungeun Kim, Akihiko Fujiwara, Hiroshi Kageyama
    J. P    hys. Soc. Jpn. 82, 013703/1-4 (2013).  DOI: 10.7566/JPSJ.82.013703
     

​2012​

  • "Superconductivity in BaTi2Sb2O with a d1 Square Lattice"
    Takeshi Yajima, Kousuke Nanako, Fumitaka Takeiri, Toshio Ono, Yuko Hosokoshi, Yoshitaka Matsushita, James Hester, Yoji Kobayashi, Hiroshi Kageyama
    J. Phys. Soc. Jpn. 81, 103706/1-4 (2012).  DOI: 10.1143/JPSJ.81.103706
     

  • "Oxyhydrides of (Ca,Sr,Ba)TiO3 Perovskite Solid Solutions"
    Tatsunori Sakaguchi, Yoji Kobayashi, Takeshi Yajima, Masatoshi Ohkura, Cédric Tassel, Fumitaka Takeiri, Shingo Mitsuoka, Hiroshi Ohkubo, Takafumi Yamamoto, Jung eun Kim, Naruki Tsuji, Akihiko Fujihara, Yoshitaka Matsushita, James Hester, Maxim Avdeev, Kenji Ohoyama, Hiroshi Kageyama
    Inorg. Chem. 51, 11371-11376 (2012).  DOI: 10.1021/ic300859n

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