Magnetic circular dichroism of ferromagnetic Co2+-doped ZnO

被引：43
|
作者：
Kittilstved, Kevin R. [1 ]
Zhao, Jialong [1 ]
Liu, William K. [1 ]
Bryan, J. Daniel [1 ]
Schwartz, Dana A. [1 ]
Gamelin, Daniel R. [1 ]
机构：
[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 06期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2221871
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Cobalt-doped ZnO (Co2+:ZnO) films were studied by magnetic circular dichroism (MCD) spectroscopy. A broad 300 K ferromagnetic MCD signal was observed between 1.4 and 4.0 eV after exposure of paramagnetic Co2+:ZnO films to zinc metal vapor, attributed to low-energy photoionization transitions originating from a spin-split donor impurity band in ferromagnetic n-type Co2+:ZnO. (c) 2006 American Institute of Physics.
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