Oxygen interstitials enhanced room temperature ferromagnetism in undoped zinc oxide

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• 作者：H. You ; J. Yang ; J.Y. Zhu ; W.F. Xu ; X.D. Tang ; ^{xdtang@sist.ecnu.edu.cn}
• 关键词：75.50 Pp ; 78.67 Bf ; 81.65 Mq ; 81.70 Fy
• 刊名：Applied Surface Science
• 出版年：2012
• 出版时间：1 March, 2012
• 年：2012
• 卷：258
• 期：10
• 页码：4455-4459
• 全文大小：538 K

文摘

Pure zinc oxide (ZnO) particles fabricated by a simple aqueous solution route were treated with hydrogen peroxide (H₂O₂) solution. X-ray diffraction (XRD) and scanning electron microscopy (SEM) showed the homogeneous growth of particles throughout the substrate with the wurtzite phase. Magnetic properties were measured and a correlation between immersion time and ferromagnetism (FM) was observed. X-ray photoemission spectroscopy (XPS) and photoluminescence (PL) were then performed to investigate the influence of hydrogen peroxide (H₂O₂) treatment on oxygen-related defects. It is revealed that oxygen interstitials (I_O) may be considered to be playing an important role in tailoring the magnetic properties of ZnO.