Fe-doped In2O3/α-Fe2O3 core/shell nanofibers fabricated by using a co-electrospinning method and its magnetic properties

被引：26
作者：
Koo, Bon-Ryul [1 ]
Park, Il-Kyu [2 ]
Ahn, Hyo-Jin [1 ]
机构：
[1] Seoul Natl Univ Sci & Technol, Dept Mat Sci & Engn, Seoul 139743, South Korea
[2] Yeungnam Univ, Dept Elect Engn, Gyeongbuk 712749, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 603卷
基金：
新加坡国家研究基金会;
关键词：
Fe-dope In2O3; alpha-Fe2O3; Nanofiber; Co-electrospinning; Core/shell nano-structure; NANOPARTICLES; ALPHA-FE2O3; GAMMA-FE2O3; NANOTUBES; MATRIX;
D O I：
10.1016/j.jallcom.2014.03.058
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report on the fabrication and magnetic properties of Fe-doped In2O3/alpha-Fe2O3 core/shell nanofibers (NFs) by co-electrospinning method. The structural investigations showed that the core and shell materials were composed of crystalline Fe-doped In2O3 NFs and alpha-Fe2O3 nanoparticles with a size of less than 1 mu m, respectively, and the morphologies of the resultant NFs changed with variation of the relative source ratio of In to Fe (the In/Fe molar ratio). Interestingly, X-ray diffraction and X-ray photoelectron spectroscopy results showed that the Fe elements were incorporated into the In2O3 lattice, causing a modification of the magnetic properties of the In2O3/alpha-Fe2O3 core/shell NFs. Investigations of the magnetic properties of the core/shell NFs showed enhanced magnetic properties, and an increase in saturation magnetization values with an increased In/Fe molar ratio. Based on our results, we suggest three mechanisms for the enhancement of magnetic properties that result from our proposed structures. (C) 2014 Elsevier B. V. All rights reserved.
引用
收藏
页码：52 / 56
页数：5
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