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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Periodical Articles > Item 987654321/17460

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/17460

Title:	On the Origin of the Ferromagnetism in Zn0.8Mn0.2O Having a Higher Curie Temperature than Zn0.8Co0.2O
Authors:	Tsai, Chia-Lung;Lin, Yow-Jon;Chen, Jia-Hong;Chang, Hsing-Cheng;Chen, Ya-Hui;Horng, Lance;Shih, Yu-Tai
Contributors:	光電科技研究所
Keywords:	A. Semiconductors;A. Thin films;C. Point defects
Date:	2012-03
Issue Date:	2013-10-02T08:37:34Z
Publisher:	Elsevier B. V.
Abstract:	Zn 0.8Co 0.2O and Zn 0.8Mn 0.2O films were deposited on substrates by a solgel technique. X-ray diffraction, field-emission scanning electron microscopy, photoluminescence, and ferromagnetism measurements were used to characterize these dilute magnetic semiconductors. It is shown that the ferromagnetic properties might be related to the formation of acceptor-like defects in the Zn 0.8Co 0.2O and Zn 0.8Mn 0.2O films. It is found that ferromagnetic Zn 0.8Mn 0.2O has a higher Curie temperature than Zn 0.8Co 0.2O. In addition, the higher ratio of grain-boundary area to grain volume of Zn 0.8Mn 0.2O than Zn 0.8Co 0.2O indicates that grain boundaries and related acceptors are the intrinsic origin for ferromagnetism. � 2011 Elsevier Ltd. All rights reserved.
Relation:	Solid State Communications, 152(6): 488-492
Appears in Collections:	[Graduate Institute of Photonics Technologies] Periodical Articles

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