Structural, optical, and magnetic properties of Fe doped In2O3 powders

被引：39
作者：
Krishna, N. Sai [1 ]
Kaleemulla, S. [1 ]
Amarendra, G. [2 ,3 ]
Rao, N. Madhusudhana [1 ]
Krishnamoorthi, C. [1 ]
Kuppan, M. [1 ]
Begam, M. Rigana [1 ]
Reddy, D. Sreekantha [4 ,5 ]
Omkaram, I. [6 ]
机构：
[1] VIT Univ, Sch Adv Sci, Thin Films Lab, Vellore 632014, Tamil Nadu, India
[2] Indira Gandhi Ctr Atom Res, Mat Sci Grp, Kalpakkam 603102, Tamil Nadu, India
[3] UGC DAE CSR, Kokilamedu 603104, Tamil Nadu, India
[4] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea
[5] Sungkyunkwan Univ, Sungkyunkwan Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea
[6] Kyung Hee Univ, Dept Elect & Radio Engn, Yongin 446701, Gyeonggi Do, South Korea
来源：
MATERIALS RESEARCH BULLETIN | 2015年 / 61卷
关键词：
Indium oxide; Solid state reaction; Dilute magnetic semiconductor; SOLID-SOLUTIONS; THIN-FILMS; FERROMAGNETISM; SEMICONDUCTOR; SPECTROSCOPY;
D O I：
10.1016/j.materresbull.2014.10.065
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Iron doped indium oxide dilute magnetic semiconductor (In1-xFex)(2)O-3 (x = 0.00, 0.03, 0.05, and 0.07) powders were synthesized by standard solid state reaction method followed by vacuum annealing. The effect of Fe concentration on structural, optical, and magnetic properties of the (In1-xFex)(2)O-3 powders have been systematically studied. X-ray diffraction patterns confirmed the polycrystalline cubic structure of all the samples. An optical band gap increases from 3.12 eV to 3.16 eV while Fe concentration varying from 0.03 to 0.07. Magnetic studies reveal that virgin/undoped In2O3 is diamagnetic. However, all the Fe-doped In2O3 samples are ferromagnetic. The saturation magnetization (M-s) of ferromagnetic (In1-xFex)(2)O-3 (x = 0.03, 0.05, and 0.07) samples increases from 11.56 memuig to 148.64 memu/g with x= 0.03-0.07. The observed ferromagnetism in these samples was attributed to magnetic nature of the dopant (Fe) as well as defects created in the samples during vacuum annealing. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：486 / 491
页数：6
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