Search Results - "Ubukata, Hiroki"

Hydride-based antiperovskites with soft anionic sublattices as fast alkali ionic conductors by Gao, Shenghan, Broux, Thibault, Fujii, Susumu, Tassel, Cédric, Yamamoto, Kentaro, Xiao, Yao, Oikawa, Itaru, Takamura, Hitoshi, Ubukata, Hiroki, Watanabe, Yuki, Fujii, Kotaro, Yashima, Masatomo, Kuwabara, Akihide, Uchimoto, Yoshiharu, Kageyama, Hiroshi

“…Most solid-state materials are composed of p-block anions, only in recent years the introduction of hydride anions (1s 2 ) in oxides (e.g., SrVO 2 H, BaTi(O,H)…”
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Vanadium Hydride as an Ammonia Synthesis Catalyst by Cao, Yu, Saito, Ayaka, Kobayashi, Yoji, Ubukata, Hiroki, Tang, Ya, Kageyama, Hiroshi

“…Early 3d transition metals, such as Ti, V, or Nb are known to be inactive for the Haber‐Bosch process, due to their strong M−N bonds. However, recently some…”
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Chemical Pressure-Induced Anion Order–Disorder Transition in LnHO Enabled by Hydride Size Flexibility by Yamashita, Hiroki, Broux, Thibault, Kobayashi, Yoji, Takeiri, Fumitaka, Ubukata, Hiroki, Zhu, Tong, Hayward, Michael A, Fujii, Kotaro, Yashima, Masatomo, Shitara, Kazuki, Kuwabara, Akihide, Murakami, Taito, Kageyama, Hiroshi

“…While cation order–disorder transitions have been achieved in a wide range of materials and provide crucial effects in various physical and chemical…”
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Mixed alkali-ion transport and storage in atomic-disordered honeycomb layered NaKNi2TeO6 by Masese, Titus, Miyazaki, Yoshinobu, Rizell, Josef, Kanyolo, Godwill Mbiti, Chen, Chih-Yao, Ubukata, Hiroki, Kubota, Keigo, Sau, Kartik, Ikeshoji, Tamio, Huang, Zhen-Dong, Yoshii, Kazuki, Takahashi, Teruo, Ito, Miyu, Senoh, Hiroshi, Hwang, Jinkwang, Alshehabi, Abbas, Matsumoto, Kazuhiko, Matsunaga, Toshiyuki, Fujii, Kotaro, Yashima, Masatomo, Shikano, Masahiro, Tassel, Cédric, Kageyama, Hiroshi, Uchimoto, Yoshiharu, Hagiwara, Rika, Saito, Tomohiro

“…Honeycomb layered oxides constitute an emerging class of materials that show interesting physicochemical and electrochemical properties. However, the…”
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Trihalide Mixing by Size-Flexible H– Ions in Layered Ba2H3 (Cl, Br, I) by Ubukata, Hiroki, Takeiri, Fumitaka, Tassel, Cédric, Kobayashi, Shintaro, Kawaguchi, Shogo, Saito, Takashi, Kamiyama, Takashi, Kobayashi, Shunsuke, Kobayashi, Genki, Kageyama, Hiroshi

“…According to the Hume-Rothery rule, anions with a large difference in ionic radii, for example, chloride and iodide anions, cannot form solid solutions. In…”
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Highly Electron-Doped TaON Single-Crystal Growth by a High-Pressure Flux Method by Ishida, Kohdai, Tassel, Cédric, Kato, Daichi, Ubukata, Hiroki, Murayama, Kantaro, Murakami, Taito, Yashima, Masatomo, Higo, Yuji, Tange, Yoshinori, Phelan, W. Adam, McQueen, Tyrel M., Kageyama, Hiroshi

“…Transition-metal oxynitrides have a variety of functions such as visible light-responsive catalysts and dielectric materials, but acquiring single crystals…”
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Photocatalytic Water Oxidation by Phosphotungstate and Mg-Al Layered Double Hydroxide Hybrid by Miyoshi, Akinobu, Shimoyama, Yuto, Mogi, Hiroto, Ubukata, Hiroki, Hirayama, Naoki, Tanaka, Ayu, Arai, Kenji, Morita, Soichiro, Yui, Tatsuto, Uchida, Sayaka, Motohashi, Teruki, Inaguma, Yoshiyuki, Kageyama, Hiroshi, Maeda, Kazuhiko

“…Immobilization of phosphotungstate ([PW12O40]3−) in the interlayer space of a Mg-Al layered double hydroxide (LDH) resulted in an absorption edge at ∼350 nm,…”
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Honeycomb‐Layered Oxides With Silver Atom Bilayers and Emergence of Non‐Abelian SU(2) Interactions by Masese, Titus, Kanyolo, Godwill Mbiti, Miyazaki, Yoshinobu, Ito, Miyu, Taguchi, Noboru, Rizell, Josef, Tachibana, Shintaro, Tada, Kohei, Huang, Zhen‐Dong, Alshehabi, Abbas, Ubukata, Hiroki, Kubota, Keigo, Yoshii, Kazuki, Senoh, Hiroshi, Tassel, Cédric, Orikasa, Yuki, Kageyama, Hiroshi, Saito, Tomohiro

“…Honeycomb‐layered oxides with monovalent or divalent, monolayered cationic lattices generally exhibit myriad crystalline features encompassing rich…”
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Kinetic Control of Anion Stoichiometry in Hexagonal BaTiO3 by Kageyama, Keisuke, Yang, Yang, Kageyama, Toki, Murayama, Kantaro, Shitara, Kazuki, Saito, Takashi, Ubukata, Hiroki, Tassel, Cédric, Kuwabara, Akihide, Kageyama, Hiroshi

“…The cubic oxyhydride perovskite BaTiO3−xHx, where the well-known ferroelectric oxide BaTiO3 is partially hydridized, exhibits a variety of functions such as…”
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Hydride Conductivity in an Anion-Ordered Fluorite Structure LnHO with an Enlarged Bottleneck by Ubukata, Hiroki, Broux, Thibault, Takeiri, Fumitaka, Shitara, Kazuki, Yamashita, Hiroki, Kuwabara, Akihide, Kobayashi, Genki, Kageyama, Hiroshi

“…We report on the hydride (H–) conductivity in fluorite-type LnHO oxyhydrides (Ln = lanthanide) using samples prepared under high pressure. It is found that,…”
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Pressure-Induced Anion Order-Disorder Transition in Layered Perovskite Sr 2 LiHOCl 2 by Wei, Zefeng, Ubukata, Hiroki, Zhong, Chengchao, Tassel, Cédric, Kageyama, Hiroshi

“…While cation order-disorder transitions have been extensively investigated because of their decisive impact on chemical and physical properties, only few anion…”
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Pressure-Induced Anion Order–Disorder Transition in Layered Perovskite Sr2LiHOCl2 by Wei, Zefeng, Ubukata, Hiroki, Zhong, Chengchao, Tassel, Cédric, Kageyama, Hiroshi

“…While cation order–disorder transitions have been extensively investigated because of their decisive impact on chemical and physical properties, only few anion…”
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Tuning Proton Conduction by Staggered Arrays of Polar Preyssler-Type Oxoclusters by Iwano, Tsukasa, Akutsu, Daiki, Ubukata, Hiroki, Ogiwara, Naoki, Kikukawa, Yuji, Wang, Shuo, Yan, Li-Kai, Kageyama, Hiroshi, Uchida, Sayaka

“…Polyoxometalates (POMs), anionic nanosized oxoclusters that can be considered as fragments of metal oxides, have been extensively studied for their diverse…”
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Structural Transformation in LnHS (Ln = La, Nd, Gd, and Er) with Coordination Change between an S‑Centered Octahedron and a Trigonal Prism by Ubukata, Hiroki, Kato, Daichi, Kitade, Shougo, Broux, Thibault, Tassel, Cédric, Schnieders, David, Dronskowski, Richard, Kageyama, Hiroshi

“…Lanthanide hydride chalcogenides LnHSe and LnHTe (Ln = lanthanides) crystallize in two polymorphs, 2H and 1H structures (ZrBeSi-type and filled-WC-type…”
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Pressure-induced structural phase transition in BaHCl by Ubukata, Hiroki, Ishida, Kohdai, Higo, Yuji, Tange, Yoshinori, Broux, Thibault, Tassel, Cédric, Kageyama, Hiroshi

“…We have investigated the structural evolution of BaHCl under high pressure using in-situ synchrotron X-ray diffraction up to 30 ​GPa. The in-situ observation…”
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High-pressure phase behavior of LnHO (Ln = lanthanides): Entropy stabilization of the fluorite structure by Terada, Ryo, Tsuchiya, Yumi, Wei, Zefeng, Ubukata, Hiroki, Tassel, Cédric, Kageyama, Hiroshi

“…In this study, we investigate the phase behavior in LnHO (Ln = Nd, Gd, and Er) at external pressures up to 5 GPa. In contrast to LaHO, we observed a direct…”
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High-pressure X-ray study of NbON oxynitride: direct transition from baddeleyite to cotunnite structure by Kozaki, Shumma, Yuan, Yao, Ubukata, Hiroki, Wei, Zefeng, Tsumori, Tatsuya, Asano, Shuto, Niwa, Ken, Hasegawa, Masashi, Kageyama, Hiroshi

“…Abstract The structural properties of NbON oxynitride under high pressure were investigated through in situ synchrotron X-ray diffraction (SXRD) up to 43 GPa…”
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Mechanochemical Synthesis of Perovskite Oxyhydrides: Insights from Shear Modulus by Sasahara, Yuki, Terada, Rina, Ubukata, Hiroki, Asahi, Miho, Kato, Daichi, Tsumori, Tatsuya, Namba, Morito, Wei, Zefeng, Tassel, Cédric, Kageyama, Hiroshi

“…Perovskite oxyhydrides have attracted recent attention due to their intriguing properties such as ionic conductivity and catalysis, but their repertoire is…”
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Intersite Charge Transfer through Eu 4f Band Engineering in Eu 1– x Sr x VO 2 H Oxyhydride Films by Namba, Morito, Takatsu, Hiroshi, Murayama, Kantaro, Shibazaki, Yuki, Ishimatsu, Naoki, Ubukata, Hiroki, Terada, Ryo, Yoshimura, Noriyuki, Kawanishi, Shohei, Terashima, Takahito, Kageyama, Hiroshi

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Intersite Charge Transfer through Eu 4f Band Engineering in Eu1–x Sr x VO2H Oxyhydride Films by Namba, Morito, Takatsu, Hiroshi, Murayama, Kantaro, Shibazaki, Yuki, Ishimatsu, Naoki, Ubukata, Hiroki, Terada, Ryo, Yoshimura, Noriyuki, Kawanishi, Shohei, Terashima, Takahito, Kageyama, Hiroshi

“…Perovskite oxyhydride EuVO2H exhibits a Mott insulating state derived from VIIIO2 layers and a ferromagnetic state derived from EuIIH layers, with compressive…”
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