Volume 52, Issue 31 pp. 8088-8092
Communication

Ferroelectricity Driven by Twisting of Silicate Tetrahedral Chains

Prof. Hiroki Taniguchi

Corresponding Author

Prof. Hiroki Taniguchi

Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

Current address: Department of Physics, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602 (Japan)

Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)Search for more papers by this author
Dr. Akihide Kuwabara

Dr. Akihide Kuwabara

Nanostructures Research Laboratory (Japan) Fine Ceramics Center, Nagoya 456-8587 (Japan)

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Dr. Jungeun Kim

Dr. Jungeun Kim

Japan Synchrotron Radiation Research Institute, Sayo-gun, Hyogo 679-5198 (Japan)

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Younghun Kim

Younghun Kim

Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561 (Japan)

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Dr. Hiroki Moriwake

Dr. Hiroki Moriwake

Nanostructures Research Laboratory (Japan) Fine Ceramics Center, Nagoya 456-8587 (Japan)

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Prof. Sungwng Kim

Prof. Sungwng Kim

Department of Energy Science, Sungkyunkwan University, Jangan-Gu, Suwon 440-746 (Korea)

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Takuya Hoshiyama

Takuya Hoshiyama

Department of Materials Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)

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Tsukasa Koyama

Tsukasa Koyama

Department of Materials Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)

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Prof. Shigeo Mori

Prof. Shigeo Mori

Department of Materials Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)

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Prof. Masaki Takata

Prof. Masaki Takata

Japan Synchrotron Radiation Research Institute, Sayo-gun, Hyogo 679-5198 (Japan)

Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561 (Japan)

RIKEN Harima Institute, Sayo-gun, Hyogo 679-5148 (Japan)

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Prof. Hideo Hosono

Prof. Hideo Hosono

Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

Frontier Research Center, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

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Prof. Yoshiyuki Inaguma

Prof. Yoshiyuki Inaguma

Faculty of Science, Gakushuin University, Toshima-ku, Tokyo 171-8588 (Japan)

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Prof. Mitsuru Itoh

Prof. Mitsuru Itoh

Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

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First published: 14 June 2013
Citations: 67

This work was supported by the Ministry of Education, Culture, Sports, Science, and Technology of Japan through a Grant-in-Aid for Young Scientists (B, grant number 24760543) and Scientific Research (C, grant number 24560833), Hitachi Metals—Materials Science Foundation, and MEXT Element Strategy Initiative Project.

Graphical Abstract

A lead-free ferroelectric: The occurrence of ferroelectricity is demonstrated in a silicate-based compound (Bi2SiO5, see picture), by direct observation of polarization switching. The mechanism of ferroelectricity in Bi2SiO5 has been studied by Raman scattering, transmission electron microscopy, X-ray powder diffraction, and first-principles calculations. The observed ferroelectricity stems from twisting of the one-dimensional SiO4 tetrahedral chain.

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