Effect of oxygen deficiencies on magnetic properties of epitaxial grown BaFeO3 thin films on (100)SrTiO3 substrates

被引：35
|
作者：
Taketani, E [1 ]
Matsui, T [1 ]
Fujimura, N [1 ]
Morii, K [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Osaka, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 04期
关键词：
ferromagnetic materials; magnetic epitaxial layers;
D O I：
10.1109/TMAG.2004.830168
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：
BaFeO3 (BFO) epitaxial thin films on (001) SrTiO3 substrates have been successfully produced by pulsed laser beam deposition. The epitaxially grown BFO was found to have tetragonal crystal structure with some amount of oxygen deficiencies. The magnetic susceptibilities of the samples strongly depended on the (hkl) directions of BFO varied in accordance with the crystalline directions, i.e., chi((100)) < chi((110)) < chi((001)). The magnetic spin structure of the epitaxially grown BFO was speculated to be conventional antiferromagnetic. The remanent magnetization of the samples was found to depend on the amount of oxygen deficiencies significantly. This implies that the 180degrees superexchange interaction of Fe4+-O2--Fe4+ may possibly produce some kinds of ferromagnetic ordering.
引用
收藏
页码：2736 / 2738
页数：3
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