期刊
CHEMISTRY OF MATERIALS
卷 20, 期 13, 页码 4420-4424出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm800749s
关键词
-
We describe the synthesis, structure, and magnetic properties of two new perovskite oxides, Sr4M3ReO12 (M = Co, Fe), that exhibit ferromagnetism with fairly high ordering temperatures (T-c = similar to 250-300 K). While the M = Co phase crystallizes in a partially ordered double perovskite (Fm3m) structure (a 7.8153 angstrom), the M = Fe phase adopts a primitive cubic perovskite (Pm3m) structure (a = 3.9353 angstrom), where the transition metal atoms are not ordered in the long range. Magnetization studies revealed bulk ferromagnetism for both oxides, but the disordered structures seem to preclude a long-range magnetic order and a definite T,. While further studies are needed to establish the exact origin of magnetism of these materials, the present investigation reveals the possibility of designing, new ferromagnetic oxides based on M3+ -O-Re7+ (M = Co, Fe) magnetic interaction in the perovskite related structures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据