Magnetization of Re-based double perovskites: Noninteger saturation magnetization disclosed

被引：28

作者：

De Teresa, J. M. ^{[1
]}

Michalik, J. M. ^{[1
]}

Blasco, J. ^{[1
]}

Algarabel, P. A. ^{[1
]}

Ibarra, M. R. ^{[1
]}

Kapusta, C. ^{[1
]}

Zeitler, U. ^{[1
]}

机构：

[1] Radboud Univ Nijmegen, High Field Magnet Lab, NL-6525 ED Nijmegen, Netherlands

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 25期

关键词：

D O I：

10.1063/1.2751127

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using static magnetic fields up to 30 T, the authors have measured the high-field magnetization in high-quality samples made from Re-based double perovskites: A(2)FeReO(6) (A(2) = Ca-2, Sr-2, BaSr) and Sr2CrReO6, with Curie temperatures ranging from 360 up to 610 K. The results indicate that the saturation magnetization in these compounds is higher than the assumed spin-only ionic values, 3 mu(B)/f.u. for A(2)FeReO(6) and 1 mu(B)/f.u. for Sr2CrReO6, which is explained by the large orbital contribution to the magnetization. Indirectly, these results show that Re-based double perovskites cannot be described as half- metals. (c) 2007 American Institute of Physics.

引用

页数：3

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