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題名: Ferromagnetism Study of Co0.2MgxZn0.8−xO Films Prepared by the Sol–Gel Method
作者: Lin, Yow-Jon;Tsai, Chia-Lung;Liu, Chia-Jyi;Horng, Lance;Shih, Yu-Tai;Wang, Mu-Shan;Jhang, Chuan-Sheng;Huang, Chao-Shien
貢獻者: 物理學系
關鍵詞: Characterization;Defect;Ferromagnetism;Photoluminescence;ZnO
日期: 2009-10
上傳時間: 2013-01-07T09:25:56Z
出版者: Springer Science+Business Media, LLC.
摘要: Co 0.2Mg x Zn 0.8-x O films prepared with different molar ratio of magnesium acetate to zinc acetate were deposited on substrates by the sol-gel technique. X-ray diffraction, photoluminescence (PL) and ferromagnetism measurements were used to characterize the Co 0.2Mg x Zn 0.8-x O diluted magnetic semiconductors. The acceptor-like defects were determined in the PL band and the intensity of the acceptor-related PL increased with increasing Mg concentration. Therefore, an increase in the number of the acceptor-like defects (zinc vacancies especially) in the Co 0.2Mg x Zn 0.8-x O film may lead to the enhancement of the magnetic properties. It is worth noting that changes in Mg concentration and the number of the acceptor-like defects are important issues for producing strong ferromagnetism Co 0.2Mg x Zn 0.8-x O films prepared by the sol-gel method.
關聯: Journal of Sol-Gel Science and Technology, 52(1): 109-112
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