FERRIMAGNETIC ZINC FERRITE FINE POWDERS

被引：32

作者：

HAMDEH, HH

HO, JC

OLIVER, SA

WILLEY, RJ

KRAMER, J

CHEN, YY

LIN, SH

YAO, YD

DATURI, M

BUSCA, G

机构：

[1] WICHITA STATE UNIV,NATL INST AVIAT RES,WICHITA,KS 67260

[2] NORTHEASTERN UNIV,CTR ELECTROMAGNET RES,BOSTON,MA 02115

[3] NORTHEASTERN UNIV,DEPT CHEM ENGN,BOSTON,MA 02115

[4] ACAD SINICA,TAIPEI,TAIWAN

[5] UNIV GENOA,IST CHIM,GENOA,ITALY

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1995年 / 31卷 / 06期

关键词：

Chemical aerogel synthesis - Superparamagnetic behavior - Zinc ferrite;

D O I：

10.1109/20.489779

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：

Partially inverted fine powders of zinc ferrite (ZnFe2O4) were produced by chemical aerogel synthesis. These powders showed magnetic ordering at temperatures to 250K. Upon ball milling, a much higher inversion parameter was attained,yielding ferrimagnetic powders having small remanence and coercive fields at room temperature. Due to the small mean particle size, superparamagnetic behavior was seen at temperatures above 25K. Powder properties were characterized by x-ray diffraction, electron microscopy, calorimetry, magnetometry, and Mossbauer effect spectroscopy techniques.

引用

页码：3808 / 3810

页数：3

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