EXAFS study of Ce1-xGdxO2-x/2

被引：75

作者：

Ohashi, T

Yamazaki, S

Tokunaga, T

Arita, Y

Matsui, T

Harami, T

Kobayashi, K

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Quantum Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Japan Atom Energy Res Inst, Kamigori, Hyogo 67812, Japan

[3] High Energy Accelerator Res Org, Photon Factory Inst, Tsukuba, Ibaraki 305, Japan

来源：

SOLID STATE IONICS | 1998年 / 113卷

关键词：

EXAFS; local structure; fluorite; Gd doped-CeO2; oxygen ion conductor;

D O I：

10.1016/S0167-2738(98)00322-1

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：

The local structures around Ce and Gd atoms in Ce1-xGdxO2-x/2 (x = 0-0.30) were studied by means of extended X-ray absorption fine structure (EXAFS) spectrometry. Oxygen vacancies introduced by doping trivalent Gd ion to CeO2 were seen to be located around both Gd and Ce ions. The association of two Ga ions and one oxygen vacancy is proposed in heavily doped solid solutions, supporting the decrease in the ionic conductivity in the heavily doped region previously reported. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：559 / 564

页数：6