ANNEALING EFFECT ON MAGNETIC-PROPERTIES OF SI-MODIFIED GAMMA-FE2O3 PARTICLES

被引：13

作者：

HSU, JH ^{[1
]}

CHANG, CR ^{[1
]}

KUO, PC ^{[1
]}

HUANG, JH ^{[1
]}

机构：

[1] NATL TAIWAN UNIV,GRAD INST MAT ENGN,TAIPEI,TAIWAN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1990年 / 89卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(90)90721-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Acicular γFe2O3 particles are synthesized by dehydration, reduction and oxidation of acicular γFeOOH particles. The annealing treatment has been added preceding the reduction step in the preparation of acicular γFe2O3 particles. We studied the annealing effect from the investigation of particle morphology, coercive force as well as magnetization. It has been found that Si adsorption on the surface of the particle will significantly improve the annealing effect. Furthermore, it causes an anomalous increase in the coercive force. The origins of annealing effect and Hc enhancement are discussed. © 1990.

引用

页码：167 / 172

页数：6

共 13 条

[1] SOME MATERIALS CONSIDERATIONS IN PARTICULATE MEDIA [J].