Local Structural Analysis for Mn-Doped ZnO Dilute Magnetic Semiconductors

被引：2
|
作者：
Yang, Dong-Seok [1 ]
Kang, Hee Jae [2 ]
机构：
[1] Chungbuk Natl Univ, Dept Phys Educ, Cheongju 361763, South Korea
[2] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
ROOM-TEMPERATURE; X-RAY; FERROMAGNETISM;
D O I：
10.7567/JJAP.52.10MC01
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The local structure around Mn atoms in 5wt% Mn-doped ZnO thin films was investigated using extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES). Mn-doped ZnO exhibits strong magnetization (SM), weak magnetization (WM) and non magnetization (NM) depending on the bond angles between two Mn and one O, bond distances between Mn and O, and the degree of order of Mn atoms. We found in the EXAFS results that the bond angle formed in a Mn-O-Mn configuration to lead to ferromagnetism is 107.7 degrees for Mn-doped ZnO thin films. Our results indicate that local structural variations have an influence on the determination of magnetic or nonmagnetic samples. (C) 2013 The Japan Society of Applied Physics
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页数：4
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