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Ferromagnetism study of Co0.2Mg x Zn0.8−x O films prepared by the sol–gel method

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Abstract

Co0.2Mg x Zn0.8−x O films prepared with different molar ratio of magnesium acetate to zinc acetate were deposited on substrates by the sol–gel technique. X-ray diffraction, photoluminescence (PL) and ferromagnetism measurements were used to characterize the Co0.2Mg x Zn0.8−x O diluted magnetic semiconductors. The acceptor-like defects were determined in the PL band and the intensity of the acceptor-related PL increased with increasing Mg concentration. Therefore, an increase in the number of the acceptor-like defects (zinc vacancies especially) in the Co0.2Mg x Zn0.8−x O film may lead to the enhancement of the magnetic properties. It is worth noting that changes in Mg concentration and the number of the acceptor-like defects are important issues for producing strong ferromagnetism Co0.2Mg x Zn0.8−x O films prepared by the sol–gel method.

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Acknowledgments

The authors acknowledge the support of the National Science Council of Taiwan (Contract No. 97-2628-M-018-001-MY3) in the form of grants.

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Authors and Affiliations

  1. Institute of Photonics, National Changhua University of Education, Changhua 500, Taiwan

    Yow-Jon Lin & Chuan-Sheng Jhang

  2. Department of Physics, National Changhua University of Education, Changhua 500, Taiwan

    Chia-Lung Tsai, Chia-Jyi Liu, Lance Horng, Yu-Tai Shih, Mu-Shan Wang & Chao-Shien Huang

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  1. Yow-Jon Lin
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  2. Chia-Lung Tsai
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Correspondence to Yow-Jon Lin.

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Lin, YJ., Tsai, CL., Liu, CJ. et al. Ferromagnetism study of Co0.2Mg x Zn0.8−x O films prepared by the sol–gel method. J Sol-Gel Sci Technol 52, 109–112 (2009). https://doi.org/10.1007/s10971-009-2009-z

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  • DOI: https://doi.org/10.1007/s10971-009-2009-z

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