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Advances in Condensed Matter Physics
Volume 2012 (2012), Article ID 363981, 5 pages
http://dx.doi.org/10.1155/2012/363981
Research Article

The Intrinsic Room-Temperature Ferromagnetism in ZnO:Co Thin Films Deposited by PLD

College of Physics and Electronics, Shandong Normal University, Jinan 250014, China

Received 9 July 2011; Revised 12 October 2011; Accepted 31 October 2011

Academic Editor: Cristiana Grigorescu

Copyright © 2012 C. C. Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

c-axis preferential orientated ZnO:Co thin films were synthesized on c-plane sapphire substrates by using pulsed laser deposition (PLD) technique in an oxygen-deficient ambient. X-ray diffraction spectra, scanning electron microscopy, X-ray photoelectron spectroscopy, energy dispersive spectroscopy, UV-vis transmittance spectra, and Raman spectra were used for characterization. Ferromagnetic behavior was clearly observed at room temperature and verified to be the intrinsic property of the material. The presence of second phase was ruled out.