INFLUENCE OF BARIUM ON THE CO MODIFICATION OF GAMMA-FE2O3 PARTICLES DERIVED FROM OXALIC PRECURSORS

被引：3

作者：

GOUGEON, M ^{[1
]}

DUPUY, O ^{[1
]}

SARDA, C ^{[1
]}

MOLLARD, P ^{[1
]}

ROUSSET, A ^{[1
]}

机构：

[1] LAB LOUIS NEEL,CNRS,F-38042 GRENOBLE,FRANCE

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 120卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(93)91282-C

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Acicular gamma-Fe2O3 core particles were derived from Ba-doped iron oxalate. Ba was located at the surface of the oxide particles, which were then modified by the cobalt epitaxial method. Coercivities as high as 800 Oe were observed with a temperature coefficient of 0.35 %/K. The presence of barium did not slow down the diffusion of cobalt inside the particle during ageing.

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页码：40 / 42

页数：3

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