X-ray photoelectron spectroscopy study of disordering in Gd2(Ti1-xZrx)2O7 pyrochlores -: art. no. 105901

被引：71

作者：

Chen, J

Lian, J

Wang, LM

Ewing, RC ^{[1
]}

Wang, RG

Pan, W

机构：

[1] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA

[2] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.88.105901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dramatic increases in ionic conductivity in Gd-2(Ti1-xZrx)(2)O-7 solid solution are related to disordering on the cation and anion lattices. Disordering in Gd-2(Ti1-xZrx)(2)O-7 was characterized using x-ray photoelectron spectroscopy (XPS). As Zr substitutes for Ti in Gd2Ti2O7 to form Gd-2(Ti1-xZrx)(2)O-7 (0.25<x <= 0.75), the corresponding O 1s XPS spectrum merges into a single symmetric peak. This confirms that the cation antisite disorder occurs simultaneously with anion disorder. Furthermore. the O 1s XPS spectrum of Gd2Zr2O7 experimentally suggests the formation of a split vacancy.

引用

页数：4

共 20 条

[1] Heavy-ion irradiation effects in Gd2(Ti2-xZrx)O7 pyrochlores [J].