Crystal structure and disorder of the fast oxide-ion conductor cubic Bi2O3

被引:144
|
作者
Yashima, M [1 ]
Ishimura, D [1 ]
机构
[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Interdisciplinary Grad Sch Sci & Engn, Midori Ku, Yokohama, Kanagawa 2268502, Japan
关键词
D O I
10.1016/j.cplett.2003.07.014
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Accurate nuclear density distribution of cubic bismuth oxide (delta-Bi2O3) has been obtained by the maximum entropy method (MEM)-based pattern fitting combined with the Rietveld method using neutron-powder-diffraction data. The result shows for the first time that the oxide ions have a complicated disorder spreading over a wide area and shift to the <111> directions from the ideal fluorite site. These features are responsible for the high oxide-ion conductivity. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:395 / 399
页数:5
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