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Composition dependent structural and morphological modifications in nanocrystalline Mn-Zn ferrites induced by high energy gamma-irradiation

Angadi, VJ and Anupama, AV and Kumar, R and Choudhary, Harish Kumar and Matteppanavar, S and Somashekarappa, HM and Rudraswamy, B and Sahoo, B (2017) Composition dependent structural and morphological modifications in nanocrystalline Mn-Zn ferrites induced by high energy gamma-irradiation. In: MATERIALS CHEMISTRY AND PHYSICS, 199 . pp. 313-321.

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Official URL: http://doi.org/10.1016/j.matchemphys.2017.07.021

Abstract

We report the high energy gamma-irradiation induced structural transformations in nanocrystalline Mn1-xZnxFe2O4 (x = 0, 0.25, 0.5, 0.75 and 1) samples synthesized by solution combustion method using a mixture of fuels. All samples were exposed to a gamma radiation dose of 50 kGy. The gamma-irradiation decomposes the single phase cubic spinel (Fd-3m) structure of the samples into new stable phases. The pure MnFe2O4 sample transformed to Mn2O3 and Fe1-xO phases whereas the pure ZnFe2O4 sample retained its phase. For the samples with intermediate Zn-content gamma-irradiation facilitates the formation of stable alpha-Fe2O3 and ZnFe2O4 phases, along with amorphous MnO phase. The scanning electron micrographs demonstrate the complete change of the sample morphology with fusion of the particles after gamma-irradiation. Our results are important for the understanding of the stability and performance of the devices used in various technological applications near intense high energy radiation sources. (C) 2017 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 30 Sep 2017 09:21
Last Modified: 01 Mar 2019 09:26
URI: http://eprints.iisc.ac.in/id/eprint/57917

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