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
收藏
页码：519 / 521
页数：3
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