Effect of Heat Treatment on Magnetic Properties of Ferrimagnetic Zinc Ferrite Prepared by Rapidly Quenching Method
Effect of Heat Treatment on Magnetic Properties of Ferrimagnetic Zinc Ferrite Prepared by Rapidly Quenching Method
复制标题
热处理对快速淬火法制备亚铁磁性锌铁氧体磁性能的影响
DOI：
10.3379/jmsjmag.22.s1_77
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
N. Soga
中科院分区：
文献类型：
--
作者：
Katsuhisa Tanaka;M. Makita;K. Hirao;N. Soga
-We have examined the effect of heat treatment temperature and time on magnetic properties of rapidly quenched oxides with compositions close to ZnFe204. These oxides show high magnetization even at room temperature as we reported previously. In particular, attention is focused on oxide with nominal composition of60ZnOo40Fe203. It is suggested that the high magnetization is brought about by iron ion clusters with Zn2 + ions occupying octahedral sites as well as solid solution of Fe304 in ZnFe204. As the heat treatment temperature increases, the room temperature magnetization decreases sluggishly below SOOae and decreases sharply above 600 ae when the heat treatment time is 2 h. It is proposed that the decrease of magnetization below SOOae corresponds to disappearance of iron ion clusters while the rapid decrease of magnetization above 600 a e is caused by oxidation of Fe2 + to form ZnFe204 with normal spinel structure.
