NUCLEATION AND GROWTH OF MAGNESIOFERRITE IN MGO CONTAINING O.9 PERCENT FE3+

被引：21

作者：

WOODS, KN

FINE, ME

机构：

[1] Materials Science Department, Northwestern University, Evanston, Illinois

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1969年 / 52卷 / 04期

关键词：

D O I：

10.1111/j.1151-2916.1969.tb13362.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The initial stage of precipitation of magnesioferrite from a supersaturated solid solution of 0.9 cation % Fe3+ in MgO at 500 °C was studied by fitting the magnetization curves to 7000 Oe at low temperatures with the Brillouin function. The averase umber of Fe3+ ions in a precipitate particle, increased monotonically with aging time from 9 in the as‐quenched condition to 88 after 16 h. The average spin quantum number per Fe3+ ion decreased to near its final value at an aging time corresponding to = 50. Thus the volume fraction of precipitate is near the final value when the average particle size is only about three unit cells of magnesioferrite. Copyright © 1969, Wiley Blackwell. All rights reserved

引用

页码：186 / &

共 13 条

[1]

ASIMOW RM, 1965, T METALL SOC AIME, V233, P401

[2] MAGNETIC INTERACTIONS OF SUPERPARAMAGNETIC PARTICLES [J].