Hashim, Mohd. and Meena, S. S. and Kotnala, R. K. and Shirsath, Sagar E. and Roy, Aashis S. and Parveen, Ameena and Bhatt, Pramod and Kumar, Shalendra and Jotania, R. B. and Kumar, Ravi and -, Alimuddin (2014) Study of structural, electrical and magnetic properties of Cr doped Ni-Mg ferrite nanoparticle. Journal of Alloys and Compounds, 602. p. 150. ISSN 0925-8388

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Abstract

We have reported the effect of Cr3+ ion doping on the structural, ac transport and Mossbauer spectral studies of ferrite nanoparticles Ni0.5Mg0.5Fe2 Chi Cr Chi O4 (Chi = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) prepared by sol-gel auto combustion technique. The micro-structural studies of the samples were obtained by using scanning electron microscopy (SEM). The dependence of Mossbauer parameters, viz., line width, isomer shift, quadrupole splitting and hyperfine magnetic field on Cr3+ substitution have been analysed. Hyperfine magnetic field and isomer shift values decreases whereas line width increases with Cr3+ substitution. Rietveld refinement and Mossbauer spectroscopy studies reveal that the Ni0.5Mg0.5Fe2 xCrxO4 with various concentrations of x belongs to mixed spinel structure. Neel's molecular field model is used to explain the variation of hyperfine magnetic field with increasing Cr3+ substitution.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Nanostructured materials Sol–gel processes Hyperfine interactions Mössbauer spectroscopy
Subjects:	Chemistry Materials Science Metallurgy & Metallurgical Engineering
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	20 Nov 2015 06:25
Last Modified:	20 Nov 2015 06:25
URI:	http://npl.csircentral.net/id/eprint/1568

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