Crystal structure of the high-temperature paraelectric phase in barium titanate BaTi2O5 -: art. no. 101909

被引：30

作者：

Yashima, M ^{[1
]}

Tu, R

Goto, T

Yamane, H

机构：

[1] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Mat Sci & Engn, Yokohama, Kanagawa 2268502, Japan

[2] Tohoku Univ, Mat Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Tohoku Univ, Interdisciplinary Res Ctr, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 10期

关键词：

D O I：

10.1063/1.2042636

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Crystal structure of a ferroelectric barium titanate BaTi2O5 was investigated by the Rietveld analysis of neutron powder diffraction data measured at 706 degrees C. The crystal structure of BaTi2O5 at 706 degrees C was refined assuming the centrosymmetric monoclinic A2/m space group. The crystal structures of the high-temperature A2/m and low-temperature A2 phases are similar. The displacement of atoms along the b axis is accompanied by the paraelectric A2/m to ferroelectric A2 phase transformation. The A2/m-A2 transition is not reconstructive but displacive. (c) 2005 American Institute of Physics.

引用

页数：3

共 17 条

[1] Dielectric property of single crystalline BaTi2O5 prepared by a floating zone method [J].