Magnetic circular dichroism of ferromagnetic Co2+-doped ZnO

Cobalt-doped ZnO (Co2+:ZnO) films were studied by magnetic circular dichroism (MCD) spectroscopy. A broad 300K ferromagnetic MCD signal was observed between 1.4 and 4.0eV after exposure of paramagnetic Co2+:ZnO films to zinc metal vapor, attributed to low-energy photoionization transitions originati...

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Bibliographic Details
Published inApplied physics letters Vol. 89; no. 6
Main Authors Kittilstved, Kevin R., Zhao, Jialong, Liu, William K., Bryan, J. Daniel, Schwartz, Dana A., Gamelin, Daniel R.
Format Journal Article
LanguageEnglish
Japanese
Published 07.08.2006
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Summary:Cobalt-doped ZnO (Co2+:ZnO) films were studied by magnetic circular dichroism (MCD) spectroscopy. A broad 300K ferromagnetic MCD signal was observed between 1.4 and 4.0eV 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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2221871