Ferroelectricity Driven by Twisting of Silicate Tetrahedral Chains

被引：71

作者：

Taniguchi, Hiroki ^{[1
]}

Kuwabara, Akihide ^{[2
]}

Kim, Jungeun ^{[3
]}

Kim, Younghun

Moriwake, Hiroki ^{[2
]}

Kim, Sungwng ^{[4
,5
]}

Hoshiyama, Takuya ^{[6
]}

Koyama, Tsukasa ^{[6
]}

Mori, Shigeo ^{[6
]}

Takata, Masaki ^{[3
,4
,7
]}

Hosono, Hideo ^{[1
,8
]}

Inaguma, Yoshiyuki ^{[9
]}

Itoh, Mitsuru ^{[1
]}

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[2] Japan Fine Ceram Ctr, Nanostruct Res Lab, Nagoya, Aichi 4568587, Japan

[3] Japan Synchrotron Radiat Res Inst, Hyogo 6795198, Japan

[4] Univ Tokyo, Grad Sch Frontier Sci, Kashiwa, Chiba 2778561, Japan

[5] Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South Korea

[6] Osaka Prefecture Univ, Dept Mat Sci, Sakai, Osaka 5998531, Japan

[7] RIKEN, Harima Inst, Mikazuki, Hyogo 6795148, Japan

[8] Tokyo Inst Technol, Frontier Res Ctr, Yokohama, Kanagawa 2268503, Japan

[9] Gakushuin Univ, Fac Sci, Toshima Ku, Tokyo 1718588, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 31期

关键词：

ferroelectricity; ferroelectric phase transition; functional oxides; oxygen tetrahedra; silicates; CRYSTAL STABILITY; SOFT-MODE; POLARIZATION; ORIGIN;

D O I：

10.1002/anie.201302188

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：8088 / 8092

页数：5

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