Mixed valence state and electrical conductivity of La1-xSrxCrO3

被引：72

作者：

Liu, XN

Su, WH ^{[1
]}

Lu, Z

Liu, J

Pei, L

Liu, W

He, LY

机构：

[1] Jilin Univ, Grp Rare Earth Solid State Phys, Changchun 130023, Peoples R China

[2] Jilin Univ, Dept Phys, Changchun 130023, Peoples R China

[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110015, Peoples R China

[4] China Ctr Adv Sci & Technol, Ctr Condensed Matter & Radiat Phys, World Lab, Beijing 100080, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 305卷 / 1-2期

关键词：

rare earth; perovskite La1-xSrxCrO3; high-temperature conductivity; interconnector; XPS;

D O I：

10.1016/S0925-8388(00)00735-0

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：

La1-xSrxCrO3 (x=0.0 similar to 0.5) samples were prepared by the sol-gel method. The crystal structures of La1-xSrxCrO3 at room temperature all are of the othorhombic perovskite GdFeO3-type. XPS analysis indicates that chromium ions are in mixed valence state. The introduction of Sr2+ into the lattice is compensated by the oxidation from Cr3+ to Cr6+ With x increasing, the amount of Cr6+ increases. The presence of the Cr6- is one of the key factors that affect the electric conductivity of La1-xSrxCrO3. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：21 / 23

页数：3

共 5 条

[1] PREPARATION, STRUCTURE, AND PROPERTIES OF STRONTIUM-DOPED LANTHANUM CHROMITES - LA1-XSRXCRO3 [J].