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

Yow-Jon Lin, Chia Lung Tsai, Chia-Jyi Liu, Lance Horng, Yu-Tai Shih, Mu Shan Wang, Chuan Sheng Jhang, Chao Shien Huang

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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 Zn 0.8-x O films prepared by the sol-gel method.

Original languageEnglish
Pages (from-to)109-112
Number of pages4
JournalJournal of Sol-Gel Science and Technology
Volume52
Issue number1
DOIs
Publication statusPublished - 2009 Oct 1

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

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