National Taiwan Ocean University Institutional Repository:Item 987654321/23483
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题名: Direct observation of structure effect on ferromagnetism in Zn1-XCoxO nanowires
作者: W. B. Jian;Z. Y. Wu;R. T. Huang;F. R. Chen;J. J. Kai;C. Y. Wu;S. J. Chiang;M. D. Lan;J. J. Lin
贡献者: 國立臺灣海洋大學:材料工程研究所
关键词: Magnetic properties of nanostructures;Magnetic semiconductors;Nanoscale materials and structures: fabrication and characterization
日期: 2006
上传时间: 2011-10-20T08:06:23Z
出版者: Physical Review B
摘要: Abstract:Diameter-controllable single-crystalline ZnO nanowires (NWs), with the [0001] growth direction in the plane, have been fabricated by using thermal evaporation method. The as-grown NWs with diameters of ˜40nm were implanted with various amounts of Co ions. These Zn1-xCoxO (x⩽0.11) NWs possessed a high density of bombardment-induced orientation variations and stacking faults, and exhibited paramagnetic behavior. After thermal annealing, the structural defects largely disappeared and noticeable hysteresis in the magnetization loops were observed, indicating the presence of apparent ferromagnetic ordering in the NWs. This result provides important insight into the role played by defects in relation to the occurrence of ferromagnetism in diluted magnetic semiconductor NWs.
關聯: 73(23), pp.233308
URI: http://ntour.ntou.edu.tw/handle/987654321/23483
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