Magnetic circular dichroism of ferromagnetic Co 2 + -doped ZnO

Cobalt-doped ZnO ( Co 2 + : Zn O ) 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 Co 2 + : Zn O films to zinc metal vapor, attributed to low-energy photoionization transit...

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Bibliographic Details
Published inApplied physics letters Vol. 89; no. 6; pp. 062510 - 062510-3
Main Authors Kittilstved, Kevin R., Zhao, Jialong, Liu, William K., Bryan, J. Daniel, Schwartz, Dana A., Gamelin, Daniel R.
Format Journal Article
Published American Institute of Physics 11.08.2006
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Summary:Cobalt-doped ZnO ( Co 2 + : Zn O ) 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 Co 2 + : Zn O films to zinc metal vapor, attributed to low-energy photoionization transitions originating from a spin-split donor impurity band in ferromagnetic n -type Co 2 + : Zn O .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2221871