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Current Affiliation Organization 【 display / non-display 】

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Affiliated academic organizations 【 display / non-display 】

Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

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• Structure and Electron-ion correlation in liquid metals

• Magnetic properties of liquid alloys

• Ionic conductivities of mixtures of molten salts

• Molecular dynamics simulation on disordered materials

• Static structures of superionic melts

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• Lithium Ion Transport Environment by Molecular Vibrations in Ion‐Conducting Glasses

  Hiroki Yamada, Koji Ohara, Satoshi Hiroi, Atsushi Sakuda, Kazutaka Ikeda, Takahiro Ohkubo, Kengo Nakada, Hirofumi Tsukasaki, Hiroshi Nakajima, Laszlo Temleitner, Laszlo Pusztai, Shunsuke Ariga, Aoto Matsuo, Jiong Ding, Takumi Nakano, Takuya Kimura, Ryo Kobayashi, Takeshi Usuki, Shuta Tahara, Koji Amezawa, Yoshitaka Tateyama, Shigeo Mori, Akitoshi Hayashi

  Energy Environ. Mater. ( Wiley )  0   e12612_1 - e12612_10   2023.03 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Crystal Growth, Structural and Thermal Studies of FeC4H4O6·2.5H2O

  Takanori Fukami, Shuta Tahara

  International Journal of Chemistry ( Canadian Center of Science and Education )  14 ( 2 ) 8 - 17   2022.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

  　View Summary

  Single crystals of iron(II) tartrate hemi-pentahydrate, FeC4H4O6·2.5H2O, were grown by the gel method using silica gels. Differential scanning calorimetry, thermogravimetric-differential thermal analysis, and X-ray diffraction measurements were performed on the single crystals. The space group symmetry (orthorhombic P212121) and structural parameters were determined at room temperature. The crystal structure consisted of slightly distorted FeO6 octahedra, C4H4O6 and H2O molecules, C4H4O6–Fe–C4H4O6 chains jointed by Fe–O bonds, and O–H···O hydrogen-bonding frameworks between adjacent molecules. Weight losses due to thermal decomposition of the crystal were found to occur in the temperature range of 300–1060 K. We inferred that the weight losses were caused by the evaporation of bound water molecules and the evolution of H2CO, CO, and O2 gases from C4H4O6 molecules, and that the black residue after decomposition was composed of triiron tetraoxide (Fe3O4) and carbon.

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• Structure of alumina glass

  Hideki Hashimoto, Yohei Onodera, Shuta Tahara, Shinji Kohara, Koji Yazawa, Hiroyo Segawa, Motohiko Murakami, Koji Ohara

  Scientific Reports ( Springer Science and Business Media LLC )  12 ( 1 )   2022.01 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  <title>Abstract</title>The fabrication of novel oxide glass is a challenging topic in glass science. Alumina (Al₂O₃) glass cannot be fabricated by a conventional melt–quenching method, since Al₂O₃ is not a glass former. We found that amorphous Al₂O₃ synthesized by the electrochemical anodization of aluminum metal shows a glass transition. The neutron diffraction pattern of the glass exhibits an extremely sharp diffraction peak owing to the significantly dense packing of oxygen atoms. Structural modeling based on X-ray/neutron diffraction and NMR data suggests that the average Al–O coordination number is 4.66 and confirms the formation of OAl₃ triclusters associated with the large contribution of edge-sharing Al–O polyhedra. The formation of edge-sharing AlO₅ and AlO₆ polyhedra is completely outside of the corner-sharing tetrahedra motif in Zachariasen's conventional glass formation concept. We show that the electrochemical anodization method leads to a new path for fabricating novel single-component oxide glasses.

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• Structural and Thermal Investigations of L-CuC4H4O6·3H2O and DL-CuC4H4O6·2H2O Single Crystals

  Takanori Fukami , Shuta Tahara

  International Journal of Chemistry   13 ( 1 ) 38   2021.04 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Mode Distribution Analysis for Superionic Melt of CuI by Coherent Quasielastic Neutron Scattering

  Yukinobu Kawakita , Tatsuya Kikuchi , Shuta Tahara , Mitsutaka Nakamura , Yasuhiro Inamura , Kenji Maruyama , Yasuhiro Yamauchi , Seiko Ohira-Kawamura , Kenji Nakajima

  JPS Conf. Proc.   33   011071_1 - 011071_6   2021.01 [ Peer Review Accepted ]

  Type of publication: Research paper (international conference proceedings)

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Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Mode Distribution Analysis for Superionic Melt of CuI by Coherent Quasielastic Neutron Scattering

  Y. Kawakita, T. Kikuchi, S. Tahara, M. Nakamura, Y. Inamura, K. Maruyama, Y. Yamauchi, S. Ohira-Kawamura, K. Nakajima

  The 3rd J-PARC Symposium  2019.09  -  2019.09 

• 希ガス結晶の構造の乱れに対するパーシステントホモロジー解析

  田原周太, 津波古雄飛, 宮田航, 島倉宏典, 深水孝則

  日本物理学会2019年秋季大会  2019.09  -  2019.09 

• 液体リンゴ酸のダイナミクス

  島倉宏典, 田原周太, 尾原幸治

  日本物理学会2019年秋季大会  2019.09  -  2019.09 

• 中性子散乱実験による原子拡散の理解 －実時間・実空間解析への展開－

  川北至信, 菊地龍弥, 松浦直人, 川崎卓郎, 古府麻衣子, 田原周太

  第22回超イオン導電体物性研究会(第73回固体イオニクス研究会)  2019.05  -  2019.05 

• 溶融(AgI)0.8(CuI)0.2混合系のX線回折実験および分子動力学計算

  田原周太, 島倉宏典, 深水孝則

  日本物理学会第74回年次大会  2019.03  -  2019.03 

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Academic Awards 【 display / non-display 】

Academic Awards 【 display / non-display 】

• Award of the Outstanding Papers Published in the JCS-Japana in 2019

  2020.05   The Ceramic Society of Japan   Understanding diffraction patterns of glassy, liquid and amorphous materials via persistent homology analyses

  Winner: Y. Onodera, S. Kohara, S. Tahara, A. Masuno, H. Inoue, M. Shiga, A. Hirata, K. Tsuchiya, Y. Hiraoka, I. Obayashi, K. Ohara, A. Mizuno, O. Sakata

• Young Scientist Award of the Physical Society of Japan

  2016   Physical society of Japan  

• Professor of The Year

  2016   University of the Ryukyus  

• Poster Award (The 3rd International Conference on Physics of Solide State Ionics)

  2009   The 3rd International Conference on Physics of Solide State Ionics  

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Grant-in-Aid for Young Scientists(B)

  Project Year: 2016  -  2018 

• Grant-in-Aid for Scientific Research(B)

  Project Year: 2016  -  2018 

• Grant-in-Aid for Scientific Research(B)

  Project Year: 2012  -  2014