Electrical transport properties of Ca3-xAgxCo4O9 (x=0-0.05) oxide

被引：1

作者：

Zhang Fei-Peng ^{[1
]}

Zhang Xin ^{[1
]}

Lu Qing-Mei ^{[1
]}

Zhang Jin-Xing ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China

来源：

ACTA PHYSICA SINICA | 2010年 / 59卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ca3Co4O9; doping; electrical transport; CRYSTAL;

D O I：

10.7498/aps.59.4211

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electrical transport properties of Ca3Co4O9 could be in by doping in the Ca site. The Ca site doped Ca3-xAgxCo4O9 (x = 0-0 05) bulk samples were fabricated by citric acid sol-gel and spark plasma sintering method. The resulting samples were analyzed by X-ray power diffraction, scanning electron microscopy and electrical constant measurement The results showed that all samples were single phased, the prefered onentation was lowered by Ag doping for Ca The A (sic)= 0 03 sample exhibited highest grain orientation among doped samples, which exhibited layered microstructure. Its electrical resistivity was increased and then decreased slightly by Ag doping, but the transport mechanism was not changed. However, the doped samples exhibited high electrical resistivity caused by changed electronic structure by Ag doping for Ca The x = 0.04 sample exhibited highest electrical resistivity in the measuring temperature region with the highest value 14 6 m Omega.cm at 973 K.

引用

页码：4211 / 4215

页数：5

共 20 条

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