Kumar, Gagan and Kotnala, R. K. and Shah, Jyoti and Kumar, Vijay and Kumar, Arun and Dhiman, Pooja and Singh, M. (2017) Cation distribution: a key to ascertain the magnetic interactions in a cobalt substituted Mg-Mn nanoferrite matrix. Physical Chemistry Chemical Physics, 19 (25). pp. 16669-16680. ISSN 1463-9076

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Abstract

The effect of Co2+ substitution into nanocrystalline Mg-Mn ferrite synthesized by a solution combustion technique has been studied. The cation distribution has been inferred from X-ray diffraction, the magnetization technique, and Mossbauer spectroscopy. The X-ray analysis and cation distribution data have been used to investigate the detailed structural parameters such as hopping lengths, ionic radii of tetrahedral and octahedral sites, oxygen positional parameter, site bond as well as edge lengths, bond lengths, and bond angles. The variation in the theoretically predicted bond angles suggested the strengthening of the A-B super-exchange interactions, and the same has been supported by M-H and M-T, as well as by Mossbauer studies. The ZFC-FC study revealed that anisotropy increases with the incorporation of cobalt ions. The values of magneton number, theoretical lattice parameter, and Curie temperature that have been calculated by using the cation distribution are found to match well with the experimentally obtained values.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Royal Society of Chemistry.
Subjects:	Chemistry > Physical Chemistry Physics > Atomic and Molecular Physics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	24 Aug 2018 07:58
Last Modified:	24 Aug 2018 07:58
URI:	http://npl.csircentral.net/id/eprint/2630

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