Enhanced magnetic anisotropy energy density for superparamagnetic particles of cobalt

被引：30
|
作者：
Hickey, BJ [1 ]
Howson, MA [1 ]
Greig, D [1 ]
Wiser, N [1 ]
机构：
[1] BAR ILAN UNIV,DEPT PHYS,RAMAT GAN,ISRAEL
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.53.32
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use our measurements of the magnetization and the magnetoresistance for very small superparamagnetic particles of Co to obtain the low-temperature value of the magnetic anisotropy energy density, C approximate to 3x10(8) erg/cm(3). This is nearly two orders of magnitude larger than the corresponding value for C for bulk Co. The enormous enhancement of C for very small particles of Co is consistent with results previously reported for very small particles of Fe and of FeNi.
引用
收藏
页码：32 / 33
页数：2
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