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Journal of Chemistry
Volume 2013, Article ID 804042, 6 pages
http://dx.doi.org/10.1155/2013/804042
Research Article

Effect of Cr Substitution on Magnetic Properties of Mg Nanoferrites Synthesized by Citrate-Gel Auto Combustion Method

1Department of Chemistry, Jayaprakash Narayan College of Engineering, Mahabubnagar 509001, Andhra Pradesh, India
2Department of Physics, Nizam College, Basheerbagh Osmania University, Hyderabad 500001, Andhra Pradesh, India
3Department of Chemistry, Osmania University, Hyderabad 500007, Andhra Pradesh, India

Received 14 May 2013; Revised 14 September 2013; Accepted 16 September 2013

Academic Editor: Theocharis C. Stamatatos

Copyright © 2013 M. Raghasudha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of Mg-Cr nanoferrites with the chemical formula MgCrxFe2−xO4 ( ) were synthesized by Citrate-Gel auto combustion method. The formation of single phase cubic spinel structure of the samples was confirmed by X-ray diffraction (XRD) analysis. It is observed that with the increase in the paramagnetic Cr content, the particle size of the ferrite compositions has decreased from 23 nm to 7 nm. Faraday magnetic Susceptibility Balance was used to measure the Magnetic susceptibility of synthesized samples that confirmed the paramagnetic nature of the ferrites. Vibrating Sample Magnetometer (VSM) was used to measure the Magnetic properties of nanoferrites under investigation at room temperature under the applied magnetic field of 15 kOe. With the increase in Cr3+ concentration, the saturation magnetization has decreased from 11 emu/g to 1.5 emu/g.