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Microstructural and Magnetic Properties of Cobalt Ferrite Nanoparticles Synthesized by Sol-Gel Technique

IJTSRD July 15, 2018

Cobalt fer rite (CoFe2O4), an inverse spinal fer rite has high permeability, good saturation 1 magnetization and no preferred direction of magnetization, high Curie temperature, and high electromagnetic performance. In the present work 0.2M cobalt nitrate 0.3M ferric nitrate and 0.4 M citric acid is used to synthesis cobalt fer rite nano particle by sol-gel technique. As the magnetic property depends on the grain size of the synthesized nano particle, metal nitrate to citric acid ratio is varied from 0.8, 0.6 and 0.4 and the structural, functional morphological and magnetic characteristics are analyzed. The structural analysis shows the decrease in the average crystal lite from 37 to 27nm when CAMN ratio decreases from 0.8 to 0.4.

The strain is directly proportional to dislocation density and it reflects the growth of the average grain size, and in the present study, it reflects the same. The calculated lattice parameter is found to be close to 8.373 Ã… and the volume of the cell is found to be 5.63x10-28 m is close to the standard value for the cobalt fer rite nano particles. From the EDS spectrum, the presence of Co, Fe, and O in the synthesized nano particles are noted. Functional groups analysis by FTIR shows the presence of organic sources. Surface morphology by Scanning electron microscope shows the distribution of spherical sized nano particles agglomerated in different sizes and the grain size calculated by image J software are close to the calculated value by Scherrer formula from XRD.

By Chitra | T Raguram | K S Rajni" Microstructural and Magnetic Properties of Cobalt Fer rite Nano particles Synthesized by Sol-Gel Technique"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd15871.pdf

Direct URL: http://www.ijtsrd.com/physics/other/15871/microstructural-and-magnetic-properties-of-cobalt-ferrite-nanoparticles-synthesized-by-sol-gel-technique/chitra

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