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Magnesium Ferrite (MgFe2O4) Nanostructures Fabricated by Electrospinning

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Author(s): Maensiri Santi | Sangmanee Montana | Wiengmoon Amporn

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 4;
Issue: 3;
Start page: 221;
Date: 2008;
Original page

Keywords: Magnesium ferrite | Nanofibers | Electrospinning | Electron microscopy | X-ray diffraction | Magnetic properties | Nanofabrication

ABSTRACT
Abstract Magnesium ferrite (MgFe2O4) nanostructures were successfully fabricated by electrospinning method. X-ray diffraction, FT-IR, scanning electron microscopy, and transmission electron microscopy revealed that calcination of the as-spun MgFe2O4/poly(vinyl pyrrolidone) (PVP) composite nanofibers at 500–800 °C in air for 2 h resulted in well-developed spinel MgFe2O4nanostuctures. The crystal structure and morphology of the nanofibers were influenced by the calcination temperature. Crystallite size of the nanoparticles contained in nanofibers increased from 15 ± 4 to 24 ± 3 nm when calcination temperature was increased from 500 to 800 °C. Room temperature magnetization results showed a ferromagnetic behavior of the calcined MgFe2O4/PVP composite nanofibers, having their specific saturation magnetization (M s) values of 17.0, 20.7, 25.7, and 31.1 emu/g at 10 Oe for the samples calcined at 500, 600, 700, and 800 °C, respectively. It is found that the increase in the tendency ofM sis consistent with the enhancement of crystallinity, and the values ofM sfor the MgFe2O4samples were observed to increase with increasing crystallite size.

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