Electrical conductivity of Nd and Ce co-doped Gd2Zr2O7 ceramics

被引：6

作者：

Liu, Z. -G. ^{[1
]}

Ouyang, J. -H. ^{[1
]}

Zhou, Y. ^{[1
]}

Xia, X. -L. ^{[1
]}

机构：

[1] Harbin Inst Technol, Inst Adv Ceram, Dept Mat Sci, Harbin 150001, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2010年 / 90卷 / 10期

基金：

中国国家自然科学基金;

关键词：

(Gd1-xNdx)(2)(Zr1-xCex)(2)O-7; impedance spectroscopy; electrical conductivity; ceramics; OXIDE FUEL-CELLS; IONIC-CONDUCTIVITY; SOLID-SOLUTIONS; THERMAL-CONDUCTIVITY; PYROCHLORE; ELECTROLYTES; FLUORITE; 0-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-1; ENHANCEMENT; BEHAVIOR;

D O I：

10.1080/09500839.2010.507174

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, (Gd1-xNdx)(2)(Zr(1-)xCe(x))(2)O-7 (0 <= x <= 0.5) ceramics have been prepared by pressureless sintering at 1973 K to investigate the influence of Nd and Ce co-doping on their electrical conductivity. The electrical conductivity of the ceramics was investigated by impedance spectroscopy measurements from 723 to 1173 K over the frequency range of 20 Hz to 2 MHz in air. The measured values obey the Arrhenius relation. For each composition, the grain conductivity gradually increases with increasing temperature from 723 to 1173 K. At a given temperature, it gradually decreases with increasing neodymium and cerium contents from x = 0 to 0.3; thereafter, the grain conductivity exhibits a slight increase with further increasing neodymium and cerium contents up to x = 0.5.

引用

页码：753 / 761

页数：9