Magnetic studies on Sr0.8Ce0.1Fe0.7Co0.3O3-δ perovskite

被引：9

作者：

Carvalho, MD

Ferreira, LP

Colomer, MT

Gaczynski, P

Cruz, MM

Waerenborgh, JC

Godinho, M

机构：

[1] Univ Lisbon, Fac Ciencias, Dep Quim & Bioquim, CCMM, P-1749016 Lisbon, Portugal

[2] CFMC UL, P-1749016 Lisbon, Portugal

[3] Univ Coimbra, Dept Fis, Fac Ciencias & Tecnol, P-3004516 Coimbra, Portugal

[4] Univ Autonoma Madrid, Inst Ceram & Vidrio, CSIC, E-28049 Madrid, Spain

[5] CFMC UL, ITN, Dept Quim, P-2686953 Sacavem, Portugal

[6] Univ Lisbon, Fac Ciencias, Dept Fis, CFMC UL, P-1749016 Lisbon, Portugal

来源：

SOLID STATE SCIENCES | 2006年 / 8卷 / 05期

关键词：

perovskite; mixed valence; magnetic transitions; Mossbauer spectroscopy;

D O I：

10.1016/j.solidstatesciences.2005.12.001

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The A-site deficient perovskite oxide Sr0.8Ce0.1Fe0.7Co0.3O2.66 was prepared using a modified citrate route with the oxygen content determined by TGA analysis and iodometric titration. Physical characterisation of this compound was carried out using electrical conductivity, magnetisation and Mossbauer studies. From the magnetic characterisation of this compound the existence of two different ordered magnetic states below 100 K was deduced, the overall behaviour being antiferromagnetic. The combined results of chemical analysis, Mossbauer spectroscopy and magnetisation allowed the determination of the oxidation states of the Co and Fe ions. (C) 2005 Elsevier SAS. All fights reserved.

引用

页码：444 / 449

页数：6

共 20 条

[1] Structural and electrochemical properties of the Sr0.8Ce0.1Fe0.7Co0.3O3-δ perovskite as cathode material for ITSOFCs [J].