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

Title
Fe-doped In2O3/alpha-Fe2O3 core/shell nanofibers fabricated by using a co-electrospinning method and its magnetic properties
Author(s)
박일규구본율[구본율]안효진[안효진]
Keywords
NANOPARTICLES; ALPHA-FE2O3; GAMMA-FE2O3; NANOTUBES; MATRIX
Issue Date
201408
Publisher
ELSEVIER SCIENCE SA
Citation
JOURNAL OF ALLOYS AND COMPOUNDS, v.603, pp.52 - 56
Abstract
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.
URI
http://hdl.handle.net/YU.REPOSITORY/31303http://dx.doi.org/10.1016/j.jallcom.2014.03.058
ISSN
0925-8388
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공과대학 > 전자공학과 > Articles
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