Ferromagnetism in Tb doped ZnO nanocrystalline films

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C.A. Huang, X. C. Liu, F. M. Zhang, Y. W. Du

研究成果: Article同行評審

23 引文 斯高帕斯(Scopus)

摘要

Nanocrystalline Tb-doped ZnO films have been prepared by ion-beam sputtering technique. Magnetic characterization showed that the films are ferromagnetic with Curie temperature (T C) higher than room temperature. By further treated with a rapid thermal annealing process, both the grain size and the carrier concentration of the films increase, while the saturation magnetization of the films decreases. This magnetic behavior can be hardly explained by either bound magnetic polaron model or free carrier mediation model, thus suggests that the grain boundaries play a key role for the origin of ferromagnetism in these films.

原文English
文章編號113704
期刊Journal of Applied Physics
111
發行號11
DOIs
出版狀態Published - 2012 六月 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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