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X-ray spectroscopic study of the charge state and local ordering of room-temperature ferromagnetic Mn-doped ZnO
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Engineering Material Physics.
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2007 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 19, no 17Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2007. Vol. 19, no 17
Keyword [en]
diluted magnetic semiconductor, transition-metal compounds, thin-films, absorption, scattering, zn1-xcoxo, bulk, als
URN: urn:nbn:se:kth:diva-16638DOI: 10.1088/0953-8984/19/17/172202ISI: 000246556400002OAI: diva2:334680
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Rao, K. V.Ahuja, Rajeev
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