Search Results - "Shitara, Kazuki"

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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Emerging computational and machine learning methodologies for proton-conducting oxides: materials discovery and fundamental understanding by Fujii, Susumu, Hyodo, Junji, Shitara, Kazuki, Kuwabara, Akihide, Kasamatsu, Shusuke, Yamazaki, Yoshihiro

“…This review presents computational and machine learning methodologies developed during a 5-year research project on proton-conducting oxides. The main goal was…”
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Solute-induced near-isotropic performance of laser powder bed fusion manufactured pure titanium by Issariyapat, Ammarueda, Kariya, Shota, Shitara, Kazuki, Umeda, Junko, Kondoh, Katsuyoshi

“…Materials produced by laser-based powder bed fusion process (L-PBF) undergo rapid solidification and several cycles of remelting. The resulting unique…”
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Kinetically Stabilized Cation Arrangement in Li3YCl6 Superionic Conductor during Solid‐State Reaction by Ito, Hiroaki, Shitara, Kazuki, Wang, Yongming, Fujii, Kotaro, Yashima, Masatomo, Goto, Yosuke, Moriyoshi, Chikako, Rosero‐Navarro, Nataly Carolina, Miura, Akira, Tadanaga, Kiyoharu

“…The main approach for exploring metastable materials is via trial‐and‐error synthesis, and there is limited understanding of how metastable materials are…”
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Precipitation and Distribution Behavior of In Situ-Formed TiB Whiskers in Ti64 Composites Fabricated by Selective Laser Melting by Umeda, Junko, Jia, Lei, Chen, Biao, Chen, Ke, Li, Shufeng, Shitara, Kazuki, Kondoh, Katsuyoshi

“…The precipitation and distribution behaviors of in situ-formed titanium boride whiskers (TiB) in TiBw-reinforced Ti-6%Al-4%V (Ti64) composites fabricated from…”
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ZnTaO2N: Stabilized High-Temperature LiNbO3‑type Structure by Kuno, Yoshinori, Tassel, Cédric, Fujita, Koji, Batuk, Dmitry, Abakumov, Artem M, Shitara, Kazuki, Kuwabara, Akihide, Moriwake, Hiroki, Watabe, Daichi, Ritter, Clemens, Brown, Craig M, Yamamoto, Takafumi, Takeiri, Fumitaka, Abe, Ryu, Kobayashi, Yoji, Tanaka, Katsuhisa, Kageyama, Hiroshi

“…By using a high-pressure reaction, we prepared a new oxynitride ZnTaO2N that crystallizes in a centrosymmetric (R3̅c) high-temperature LiNbO3-type structure…”
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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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Theoretical calculations of the thermodynamic stability of ionic substitutions in hydroxyapatite under an aqueous solution environment by Matsunaga, Katsuyuki, Murata, Hidenobu, Shitara, Kazuki

“…Defect formation energies in materials generally depend on chemical potentials determined by a chemical equilibrium condition. In particular, an aqueous…”
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Cytotoxicity of stoichiometric hydroxyapatites with different crystallite sizes by Shitara, Kazuki, Murata, Hidenobu, Watanabe, Kenji, Kojima, Chie, Sumida, Yuki, Nakamura, Atsutomo, Nakahira, Atsushi, Tanaka, Isao, Matsunaga, Katsuyuki

“…Hydroxyapatite (HAp) samples were synthesized by a solution reaction method followed by heat-treatments at three different temperatures. Special attention was…”
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First-principles design and experimental validation of β-Ti alloys with high solid-solution strengthening and low elasticities by Shitara, Kazuki, Yokota, Katsuya, Yoshiya, Masato, Umeda, Junko, Kondoh, Katsuyoshi

“…β-Ti alloys with high strengths and low elasticities are suitable for application in biomaterials. However, to date, a clear and quantitative alloy design…”
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Mechanisms of tensile strengthening and oxygen solid solution in single β-phase Ti-35 at.%Ta+O alloys by Yokota, Katsuya, Bahador, Abdollah, Shitara, Kazuki, Umeda, Junko, Kondoh, Katsuyoshi

“…Single β phase titanium alloys are used for fabricating biomedical devices, and it is desirable to improve the strength of these alloys. In this study, the…”
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Substantial role of charge transfer on the diffusion mechanism of interstitial elements in α-titanium: A First-principles study by Shitara, Kazuki, Yoshiya, Masato, Umeda, Junko, Kondoh, Katsuyoshi

“…The diffusion mechanism of interstitial solute elements in α-Ti was investigated using first-principles calculations. Solute elements, B, C, N, O and F, were…”
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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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Tensile property enhancement by oxygen solutes in selectively laser melted titanium materials fabricated from pre-mixed pure Ti and TiO2 powder by Kondoh, Katsuyoshi, Ichikawa, Eri, Issariyapat, Ammarueda, Shitara, Kazuki, Umeda, Junko, Chen, Biao, Li, Shufeng

“…Ti-based materials with high oxygen solute contents were fabricated from mixtures of Ti powder and TiO2 particles by selective laser melting (SLM). Uniformly…”
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Quantitative strengthening evaluation of powder metallurgy Ti–Zr binary alloys with high strength and ductility by Kondoh, Katsuyoshi, Fukuo, Mizuki, Kariya, Shota, Shitara, Kazuki, Li, Shufeng, Alhazaa, Abdulaziz, Umeda, Junko

“…Titanium is well-known for its high strength, good corrosion resistance, and biocompatibility. For further improvement of its mechanical properties, it is…”
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Computational design of stable and highly ion-conductive materials using multi-objective bayesian optimization: Case studies on diffusion of oxygen and lithium by Karasuyama, Masayuki, Kasugai, Hiroki, Tamura, Tomoyuki, Shitara, Kazuki

“…[Display omitted] •Demand for design of stable and highly ion-conductive materials is high.•However, extensive search using theoretical computations is…”
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Average Cubic BaTaO2N Crystal Structure Formed by 50 nm Size Domains with Polar Nanoregions Consisting of cis-TaO4N2 Octahedral Chains by Masubuchi, Yuji, Koyama, Kyohei, Hosono, Akira, Higuchi, Mikio, Takesada, Masaki, Shitara, Kazuki, Moriwake, Hiroki, Kikkawa, Shinichi

“…A noncentrosymmetric polar structure in ferroelectric BaTaO2N having a cubic perovskite-type structure was investigated both in theoretical calculation and…”
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Average Cubic BaTaO 2 N Crystal Structure Formed by 50 nm Size Domains with Polar Nanoregions Consisting of cis -TaO 4 N 2 Octahedral Chains by Masubuchi, Yuji, Koyama, Kyohei, Hosono, Akira, Higuchi, Mikio, Takesada, Masaki, Shitara, Kazuki, Moriwake, Hiroki, Kikkawa, Shinichi

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Acicular microstructure formation and strengthening behavior of Ti-4%Fe alloys by Zr addition by Teramae, Takuma, Tanaka, Takayuki, Fukuo, Mizuki, Shitara, Kazuki, Umeda, Junko, Li, Shufeng, Alhazaa, Abdulaziz, Kondoh, Katsuyoshi

“…Commercial pure Ti alloys are favorable for biomedical applications; however, they need to be strengthened by the addition of alloying elements. Herein, Ti-Fe…”
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Strongly Enhanced Polarization in a Ferroelectric Crystal by Conduction-Proton Flow by Yanagisawa, Junichi, Aoyama, Takuya, Fujii, Kotaro, Yashima, Masatomo, Inaguma, Yoshiyuki, Kuwabara, Akihide, Shitara, Kazuki, Le Ouay, Benjamin, Hayami, Shinya, Ohba, Masaaki, Ohtani, Ryo

“…Ion conductors comprising noncentrosymmetric frameworks have emerged as new functional materials. However, strongly correlated polarity functionality and ion…”
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