DOI: 10.1063/1.2832652. Enhancement of magnetic moment of Co-doped ZnO films by postannealing in vacuum

Enhancement of magnetic moment of Co-doped ZnO films by postannealing in vacuum

10.1063/1.2832652

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

The Co-doped ZnO thin films were prepared on c-cut sapphire substrates by magnetron cosputtering, and then annealed at various temperatures in vacuum. Magnetic measurements indicate that all the films are ferromagnetic at room temperature and the magnetization of the annealed Zn0.88Co0.12O films is increased about one order of magnitude in comparison with the corresponding as-deposited one. The enhancement of magnetization is possibly due to the fact that the generation of oxygen vacancies during annealing in vacuum increases the carrier (electron) concentration, which is consistent with the mechanism of carrier-induced ferromagnetism. Optical spectrometry indicates that Co2+ enters the tetrahedral sites of the wurtzite structure of ZnO host and substitutes for Zn2+.

Bibliography

Li, X.-L., Wang, Z.-L., Qin, X.-F., Wu, H.-S., Xu, X.-H., & Gehring, G. A. (2008). Enhancement of magnetic moment of Co-doped ZnO films by postannealing in vacuum. Journal of Applied Physics, 103(2).

Authors 6

Xiao-Li Li (first)
Zhu-Liang Wang (additional)
Xiu-Fang Qin (additional)
Hai-Shun Wu (additional)
Xiao-Hong Xu (additional)
G. A. Gehring (additional)

References 27 Referenced 29

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Dates

Type	When
Created	17 years, 6 months ago (Jan. 23, 2008, 6:24 p.m.)
Deposited	2 years, 1 month ago (June 30, 2023, 11:11 p.m.)
Indexed	3 weeks, 2 days ago (July 30, 2025, 6:50 a.m.)
Issued	17 years, 7 months ago (Jan. 15, 2008)
Published	17 years, 7 months ago (Jan. 15, 2008)
Published Online	17 years, 6 months ago (Jan. 23, 2008)
Published Print	17 years, 7 months ago (Jan. 15, 2008)

Funders 0

None

BibTeX

@article{Li_2008, title={Enhancement of magnetic moment of Co-doped ZnO films by postannealing in vacuum}, volume={103}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.2832652}, DOI={10.1063/1.2832652}, number={2}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Li, Xiao-Li and Wang, Zhu-Liang and Qin, Xiu-Fang and Wu, Hai-Shun and Xu, Xiao-Hong and Gehring, G. A.}, year={2008}, month=jan }

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