THE SURFACTANT INFLUENCE ON THE SURFACE MAGNETIC-PROPERTIES OF FE3O4 MICROCRYSTALS

被引：5
|
作者：
HU, Z
YANG, XL
LIU, RC
CHEN, XS
HE, YH
HSIA, YF
机构：
[1] E CHINA NORMAL UNIV,DEPT PHYS,SHANGHAI,PEOPLES R CHINA
[2] SW INST APPL MAGNET,MIANGYANG,PEOPLES R CHINA
来源：
HYPERFINE INTERACTIONS | 1990年 / 57卷 / 1-4期
关键词：
D O I：
10.1007/BF02405735
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Mössbauer measurements, electron microscopy and infrared spectroscopy, have been used for investigating the Fe3O4 microcrystals coated with different surfactants. The experimental results show that the surface condition of the system changes and the anisotropy energy constant K of Fe3O4 microcrystals increases effectively when the surfactants being added. The spin pinning effect on a sample surface was observed and the pinning depth and the pinning direction were estimated. Besides, it has been shown that the anisotropy energy constant K of the coated Fe3O4 has an abrupt change nearby Tv. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.
引用
收藏
页码：1871 / 1874
页数：4
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