| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5391189 | Chemical Physics Letters | 2006 | 5 Pages |
Abstract
We report on the structural, magnetic, optical and transport properties of As-doped Zn0.9Co0.1O thin films. X-ray diffraction indicates highly (0Â 0Â 0Â 1) textured samples free of secondary phases. Transmission UV-Vis spectroscopy shows that Co is in the +2 oxidation state and substitute for the Zn2+ ions of the ZnO matrix. ZnCoO was doped with 0.5% As which lead to n-type doping. Before and after As-implantation, the films remain ferromagnetic up to 350Â K and the magnetization is unchanged. Surprisingly, there is no real influence of the doping process on the exchange interaction mediated by itinerant carriers between magnetic ions.
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Authors
H. Ndilimabaka, S. Colis, G. Schmerber, D. Müller, J.J. Grob, L. Gravier, C. Jan, E. Beaurepaire, A. Dinia,