Metallic ferromagnetism in Ni-doped La0.7Sr0.3CoO3

被引：3

作者：

Wang, ZH

Wang, FW

Chen, X

Li, RW

Shen, BG

机构：

[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China

[3] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 01期

关键词：

D O I：

10.1063/1.1416131

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structure, magnetization, and electrical transport of perovskite cobaltites La0.7Sr0.3Co1-yNiyO3 have been studied. It is found that the substitution of Ni for Co induces no apparent changes in bond length and angle in the Co(Ni)-O network, and only moderately suppresses the ferromagnetism. Moreover, a retention of the metallic conduction has been observed from y=0 to 0.2, which is in strong contrast to the reported insulating state of the other Co site doped La0.7Sr0.3CoO3. A double-exchange-like interaction between Ni ion and its neighboring Co ion is suggested to explain the experimental results. (C) 2002 American Institute of Physics.

引用

页码：519 / 521

页数：3

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