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| Journal:
JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL)
SEPTEMBER 2010
, Volume 4
, Number 2; Page(s) 1 To 4. |
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Paper: DETERMINATION OF MAGNETIC PROPERTIES OF NANO-SIZE COFE2O4 PARTICLES SYNTHESIZED BY COMBINATION OF SOL-GEL AUTO-COMBUSTION AND ULTRASONIC IRRADIATION TECHNIQUES |
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| Author(s): ABEDINI KHORRAMI S., MAHMOUDZADEH G., MADANI S.S.*, SEPEHR S.S., MANIE S., MORADI SH., GHARIB F., MEHRDAD SHARIF A., ABROMAND AZAR P. |
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| * CHEMISTRY DEPARTMENT, NORTH TEHRAN BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN |
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| Abstract:
Nano-crystalline CoFe2O4 powder was prepared by combination of sol-gel auto-combustion and ultrasonic irradiation methods from metal nitrades and glycine. The resulting powders were investigated using X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). The grains observed in as-burnt powder were proved to be CoFe2O4 nano-crystallites with high dispersibility and low agglomeration. The crystallite size of as-formed powders was 39.12 nm. The crystalline cobalt ferrite powders with magnetic properties having a maximum saturation magnetization (44.02 emu/g) was achieved for Fe3+/Co2+molar ratio 1: 1 and calcination temperature 750°C for 4 h. Our results indicate that this method might provide a promising option for synthesizing high-quality CoFe2O4 nano-powder.
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| Keyword(s): NANO-CRYSTALLINE, COFE2O4, SOL-GEL AUTO-COMBUSTION, ULTRASONIC IRRADIATION, MAGNETIC PROPERTIES |
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