Large room-temperature intergrain magnetoresistance in double perovskite SrFe1-x(Mo or Re)xO3

被引：222

作者：

Kim, TH

Uehara, M

Cheong, SW

Lee, S

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[2] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

[3] Aoyama Gakuin Univ, Dept Phys, Tokyo 157, Japan

[4] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 12期

关键词：

D O I：

10.1063/1.123672

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report significant intergrain magnetoresistance (IMR) in polycrystalline double perovskites of SrFe1-x (Mo or Re)(x)O-3 at room temperature. Systematics of the temperature dependence of IMR indicates that the observed large room-temperature IMR in SrFe1/2Mo1/2O3 originates from the ferrimagnetic nature of insulating grain boundaries as well as the half-metallicity of this perovskite. Our results indicate that a new avenue for spin-polarized tunneling junctions is to utilize insulating interface layers with ferromagnetic or ferrimagnetic coupling. (C) 1999 American Institute of Physics. [S0003-6951(99)00412-X].

引用

页码：1737 / 1739

页数：3

共 20 条

[1] MAGNETIC AND MOSSBAUER STUDIES OF ORDERED PEROVSKITES SR2FE1+XRE1-XO6 [J].