Effect of defect complex on magnetic properties of (Fe,Mn)-doped ZnO thin films |
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Authors: | Hailing Yang Xiaoguang Xu Guoqing Zhang Jun Miao Xin Zhang Shizhe Wu Yong Jiang |
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Affiliation: | State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing. Beijing 100083,China |
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Abstract: | We have observed room temperature ferromagnetism in Mn-doped and (Fe, Mn)-codoped ZnO thin films grown under different oxygen partial pressures by pulsed laser deposition. The X-ray diffraction and optical transmission spectra studies demonstrate the natural incorporation of Fe and Mn cations into wurtzite ZnO lattices. The effects of transition metal doping and defects on the magnetic properties was investigated. It is found that room temperature ferromagnetism is sensitive to oxygen vacancy and Zn vacancy. The absence of ferromagnetism in pure ZnO films grown under different oxygen partial pressures reveals that the transition metal ions should also play an important role in inducing the ferromagnetism. |
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Keywords: | diluted magnetic semiconductors pulsed laser deposition (Fe, Mn)-doped ZnO |
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