Steric effects and electron doping in Sr2CrReO6 double-perovskite oxides

被引：6
|
作者：
Michalik, J. M.
De Teresa, J. M. [1 ]
Serrate, D.
Blasco, J.
Ibarra, M. R.
机构：
[1] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
[2] Univ Zaragoza, Inst Nanociencia Aragon, E-50009 Zaragoza, Spain
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期
关键词：
double-perovskite structure; half metal; doping effect; high Curie temperature; CURIE-TEMPERATURE;
D O I：
10.1016/j.jmmm.2007.03.057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The study of electron-doped Sr2-xNdxCrReO6 half-metallic double perovkites has been carried out. Detailed characterization by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and magnetization measurements was done. XRD and SEM measurements indicate that the desired stoichiometry is obtained up to Sr substitution around 25%. Magnetization measurements as a function of temperature (up to 800 K) in the Nd-substituted compounds indicate that substantial modification of the Curie temperature does not occur for the investigated level of Nd doping. The values of the saturation magnetization at 5 K for the compounds are consistent with additional electrons being promoted to the conduction band with magnetic moment antiparallel to the localized moment. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：413 / 416
页数：4
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