X-ray spectroscopic study of the charge state and local ordering of room-temperature ferromagnetic Mn-doped ZnO

J. H. Guo, Amita Gupta, Parmanand Sharma, K. V. Rao, M. A. Marcus, C. L. Dong, J. M.O. Guillen, S. M. Butorin, M. Mattesini, P. A. Glans, K. E. Smith, C. L. Chang, R. Ahuja

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32 Citations (Scopus)

Abstract

The charge state and local ordering of Mn doped into a pulsed laser deposited single-phase thin film of ZnO are investigated by using x-ray absorption spectroscopy at the O K-edge, Mn K-edge and L-edge, and x-ray emission spectroscopy at the O K-edge and Mn L-edge. This film is ferromagnetic at room temperature. EXAFS measurement shows that Mn2+ replaces the Zn site in tetrahedral symmetry, and there is no evidence for either metallic Mn or MnO in the film. Upon Mn doping, the top of O 2p valence band extends into the bandgap, indicating additional charge carriers being created.

Original languageEnglish
Article number172202
JournalJournal of Physics Condensed Matter
Volume19
Issue number17
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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