| Structural, Magnetic and Dielectric Properties of
Nanocrystalline y
y y M Fe3 O
/2 3-( /2) 4
  (M = Li and Mg) Ferrites
Synthesized via EDTA/EG Assisted Sol-Gel Method |
Roya Baladi and Khalilollah Gheisari*
Pages : 195-203
DOI : 10.1080/0371750X.2019.1671901 |
| Abstract |
| In this study, lithium and magnesium ferrites have been synthesized using
EDTA/EG assisted sol-gel method. Based on X-ray diffraction data, it is identified
that a spinel-type structure of Li ferrite with space group of P4332 and Mg ferrite
with space group of Fd3m has been successfully formed. The estimated value of
crystallite size falls within 33-42 nm range. The microstructure of the as-produced
powders examined by a field emission scanning electron microscope shows that
secondary particles with the mean particle size of 30-170 nm tend to agglomerate
severely. Regarding the magnetic properties measured by a vibrating sample
magnetometer, Li ferrite, due to higher saturation magnetization than that of
Mg ferrite (53.54 versus 23.27 emu.g–1) exhibits superior magnetic properties. In
contrast, dielectric properties shows that Mg ferrite gives a much greater dielectric
constant at all the measured frequency range.
[Keywords: Sol-gel, Dielectric properties, Magnetic properties, Nanocrystalline,
Li ferrite, Mg ferrite] |
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