Oxygen vacancy induced ferromagnetism in un-doped ZnO thin films

分类： 物理学 >> 凝聚态:结构、力学和热性能 提交时间： 2017-03-26

Peng Zhan Weipeng Wang Can Liu Yang Hu Zhengcao Li Zhengjun Zhang Peng Zhang Baoyi Wang Xingzhong Cao

摘要： ZnO films became ferromagnetic when defects were introduced by thermal annealing in flowing argon. This ferromagnetism, as shown by the photoluminescence measurement and positron annihilation analysis, was induced by the singly occupied oxygen vacancy, with a saturated magnetization dependent positively on the amount of this vacancy. This study clarified the origin of the ferromagnetism of un-doped ZnO thin films, and provides possibly an alternative way to prepare ferromagnetic ZnO films.

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