Magnesium Ferrite (MgFe2O4) Nanostructures Fabricated by Electrospinning

Nanoscale Research Letters

关键词: Magnesium ferrite;    Nanofibers;    Electrospinning;    Electron microscopy;    X-ray diffraction;    Magnetic properties;    Nanofabrication;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown