Temperature dependence of magnetic hysteresis of RCox:Co nanocomposites (R=Pr and Sm)

被引：29

作者：

Liu, JP

Skomski, R

Liu, Y

Sellmyer, DJ

机构：

[1] Univ Nebraska, Behlen Lab Phys, Lincoln, NE 68588 USA

[2] Univ Nebraska, Dept Mech Engn, Lincoln, NE 68588 USA

[3] Univ Nebraska, Ctr Mat Res & Anal, Lincoln, NE 68588 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.372826

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of magnetic hysteresis of RCox:Co (R=Pr and Sm) nanocomposite films is reported. These films are prepared by dc and rf sputtering and subsequent thermal processing. It is found that the squareness of the hysteresis loops deteriorates with decreasing temperature. This is attributed to the enhanced magnetic anisotropy of the hard phases at low temperatures. The analysis of the magnetic reversal process shows that the anisotropy enhancement leads to a transition from cooperated to independent behavior. This analysis agrees well with the experimental results. (C) 2000 American Institute of Physics. [S0021-8979(00)24708-7].

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页码：6740 / 6742

页数：3

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