Tunneling giant magnetoresistance in Fe-SiO2 multilayered and alloyed films

被引：48

作者：

Honda, S

Okada, T

Nawate, M

机构：

[1] Physical Electronics, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima 739

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 165卷 / 1-3期

关键词：

giant magnetoresistance; tunneling; -; spin-dependent; thin films; multilayers;

D O I：

10.1016/S0304-8853(96)00492-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic properties and magnetoresistance (MR) are examined for Fe-SiO2 multilayers and granular films prepared on glass substrates by rf sputtering. In both the multilayers with thin Fe layers, which are discontinuous forming Fe granules, and the granular films of small Fe composition, the magnetization curve follows the Langevin function indicating superparamagnetic nature. These films exhibit the giant MR arising from spin-dependent tunneling between neighboring superparamagnetic Fe granules for both systems, and show a maximum value of 3.6% at room temperature.

引用

收藏

页码：153 / 156

页数：4

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