MAGNETIC-PROPERTIES OF ULTRAFINE CO PARTICLES

被引：74

作者：

GANGOPADHYAY, S

HADJIPANAYIS, GC

SORENSEN, CM

KLABUNDE, KJ

机构：

[1] KANSAS STATE UNIV AGR & APPL SCI,DEPT CHEM,MANHATTAN,KS 66506

[2] KANSAS STATE UNIV AGR & APPL SCI,DEPT PHYS,MANHATTAN,KS 66506

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/20.179749

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Fine particles of Co have been prepared in the size range of 50 - 350 angstrom by the vapor deposition technique. The dependence of magnetization on size and temperature has been studied. A maximum coercivity of 1500 Oe was obtained for a particle size of 350 angstrom. The magnetic and structural measurements indicate a shell-type structure with a fcc Co core surrounded by a Co-oxide shell. The effect of exchange interactions between the antiferromagnetic Co-oxide shell and the ferromagnetic Co core on the magnetic behavior of the powders has been investigated.

引用

页码：3174 / 3176

页数：3