Room-temperature magneto-optics of ferromagnetic transition-metal-doped ZnO thin films

被引：198
|
作者：
Neal, J. R. [1 ]
Behan, A. J.
Ibrahim, R. M.
Blythe, H. J.
Ziese, M.
Fox, A. M.
Gehring, G. A.
机构：
[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England
[2] Univ Leipzig, Div Superconduct & Magnetism, D-04103 Leipzig, Germany
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 19期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1103/PhysRevLett.96.197208
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magneto-optic studies of ZnO doped with transition metals Co, Mn, V, and Ti indicate a significant magnetic circular dichroism (MCD) at the ZnO band edge at room temperature, together with an associated dispersive Faraday rotation. Similar spectra occur for each dopant, which implies that the ferromagnetism is an intrinsic property of the bulk ZnO lattice. At 10 K, additional paramagnetic contributions to the MCD are observed, but above about 150 K, the magnitude of the MCD signal is dominated by the ferromagnetism and is almost temperature independent. The MCD at the ZnO band edge shows room temperature hysteretic behavior.
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页数：4
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