TY - JOUR
T1 - Fe-doped In2O3/α-Fe2O3 core/shell nanofibers fabricated by using a co-electrospinning method and its magnetic properties
AU - Koo, Bon Ryul
AU - Park, Il Kyu
AU - Ahn, Hyo Jin
PY - 2014/8/5
Y1 - 2014/8/5
N2 - We report on the fabrication and magnetic properties of Fe-doped In 2O3/α-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 α-Fe2O3 nanoparticles with a size of less than 1 μm, 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 In2O 3/α-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.
AB - We report on the fabrication and magnetic properties of Fe-doped In 2O3/α-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 α-Fe2O3 nanoparticles with a size of less than 1 μm, 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 In2O 3/α-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.
KW - Co-electrospinning
KW - Core/shell nano-structure
KW - Nanofiber
UR - http://www.scopus.com/inward/record.url?scp=84897519716&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2014.03.058
DO - 10.1016/j.jallcom.2014.03.058
M3 - Article
AN - SCOPUS:84897519716
SN - 0925-8388
VL - 603
SP - 52
EP - 56
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -