NEW DATA ON ELECTRICAL-PROPERTIES AND ANTIFERROMAGNETISM OF HIGHLY OXIDIZED PEROVSKITE SRFEOX (2.5-LESS-THAN-X-LESS-THAN-3.0)

被引：24

作者：

NAKAMURA, S

IIDA, S

机构：

[1] School of Science and Engineering, Teikyo University, Utsunomiya, 320

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1995年 / 34卷 / 3A期

关键词：

PEROVSKITE STRUCTURE; SRFEOX; NEARLY METALLIC CONDUCTION; ANTIFERROMAGNETIC ORDER; PARASITIC FERROMAGNETISM; DOUBLE-EXCHANGE MODEL;

D O I：

10.1143/JJAP.34.L291

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nearly metallic conduction on the order of 10(-3) Omega . cm was observed in the polycrystalline perovskite SrFeO2.92. The temperature coefficient of resistivity d rho/dT, however, was negative down to 12 K, indicating that the material is not truly metallic. The activation energy for conduction becomes noticeably small in the antiferromagnetically ordered state. The double-exchange approach might be adequate to explain these behaviors. For the oxygen-deficient specimens, thermoremanent magnetization due to parasitic ferromagnetism was observed.

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页码：L291 / L293

页数：3

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