2003/07/22 by S. C. Wi, J.-S. Kang, J. -S. Kang +19 · 1 citation
Materials Science · Physics and Astronomy · #Copper-based nanomaterials and applications #Ga2O3 and related materials #ZnO doping and properties #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.1756197
3 pages, 2 figures
arxiv created 2003/07/22 · openalex publication_date 2004/05/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.