Magnetic properties of the double perovskites A2FeMoO6;: A = Ca, Sr, Ba

被引：171

作者：

Borges, RP ^{[1
]}

Thomas, RM

Cullinan, C

Coey, JMD

Suryanarayanan, R

Ben-Dor, L

Pinsard-Gaudart, L

Revcolevschi, A

机构：

[1] Trinity Coll, Dept Phys, Dublin 2, Ireland

[2] Univ Paris Sud, CNRS, Lab Physicochim Solides, F-91405 Orsay, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1999年 / 11卷 / 40期

关键词：

D O I：

10.1088/0953-8984/11/40/104

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The double-perovskite oxides Ca2FeMoO6, Sr2FeMoO6 and Ba2FeMoO6 show evidence of ferromagnetic metallic behaviour, with Curie temperatures of 345-426 K and saturation magnetization of 3.5-3.9 mu(B) /formula unit. Ceramics show little anisotropic magnetoresistance, but the low-held isotropic negative magnetoresistance of Sr2FeMoO6 is 7% in 1 T at room temperature and reaches 15% at 77 K. An effect of about 1% is found in 20 mT at room temperature in both ceramics and pressed powders of this compound.

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页码：L445 / L450

页数：6

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