TITLE

Electronic structure of Zn1-xCoxO using photoemission and x-ray absorption spectroscopy

AUTHOR(S)
Wi, S. C.; Kang, J.-S.; Kim, J. H.; Cho, S.-B.; Kim, B. J.; Yoon, S.; Suh, B. J.; Han, S. W.; Kim, K. H.; Kim, K. J.; Kim, B. S.; Song, H. J.; Shin, H. J.; Shim, J. H.; Min, B. I.
PUB. DATE
May 2004
SOURCE
Applied Physics Letters;5/24/2004, Vol. 84 Issue 21, p4233
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Electronic structures of homogeneous bulk samples of Zn0.9Co0.1O which do not exhibit diluted ferromagnetic semiconducting (DMS) behavior have been investigated using photoemission spectroscopy and x-ray absorption spectroscopy. We have found that the Co ions in Zn1-xCoxO are in the divalent Co2+(d7) states under the tetrahedral symmetry. Our finding indicates that the DMS properties will not be produced when Co ions are properly substituted for Zn sites, implying that the DMS properties observed in Zn1-xCoxO thin films are likely to be extrinsic. © 2004 American Institute of Physics.
ACCESSION #
13077520

 

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