On the origin of the ferromagnetism in Zn 0.8Mn 0.2O having a higher Curie temperature than Zn 0.8Co 0.2O

Chia Lung Tsai, Yow Jon Lin, Jia Hong Chen, Hsing Cheng Chang, Ya Hui Chen, Lance Horng, Yu Tai Shih

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Zn 0.8Co 0.2O and Zn 0.8Mn 0.2O films were deposited on substrates by a solgel technique. X-ray diffraction, field-emission scanning electron microscopy, photoluminescence, and ferromagnetism measurements were used to characterize these dilute magnetic semiconductors. It is shown that the ferromagnetic properties might be related to the formation of acceptor-like defects in the Zn 0.8Co 0.2O and Zn 0.8Mn 0.2O films. It is found that ferromagnetic Zn 0.8Mn 0.2O has a higher Curie temperature than Zn 0.8Co 0.2O. In addition, the higher ratio of grain-boundary area to grain volume of Zn 0.8Mn 0.2O than Zn 0.8Co 0.2O indicates that grain boundaries and related acceptors are the intrinsic origin for ferromagnetism.

Original languageEnglish
Pages (from-to)488-492
Number of pages5
JournalSolid State Communications
Issue number6
Publication statusPublished - 2012 Mar 1


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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