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Asian Journal of Research in Chemistry
Year : 2018, Volume : 11, Issue : 3
First page : ( 526) Last page : ( 532)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2018.00094.9

Cation distribution and rietveld refinement of zinc substituted magnesium ferrichromate

More Paresh*, Patil Kundan, Ghag Namrata, Suhanda Juhi

Department of Chemistry., K.E.T'S V. G. Vaze College, Mulund (E), Mumbai-400081, Maharashtra (MS), India

*Corresponding Author E-mail: paresh.m34@gmail.com

Online published on 21 August, 2018.

Abstract

Zinc substituted Magnesium ferrichromate Mg1-xZnxFeCrO4 (x = 0.0 to x = 0.9)) system was synthesized by co-precipitation method. The structural, spectral and morphological properties of ferrites were determined by X-ray diffraction (powder XRD), IR and Scanning Electron Microscopy (SEM). Crystal lattices parameters increases with the increase in the zinc substitution in the system. Two absorption bands in the FTIR, in the range of 400 cm−1 to 4000 cm−1 were observed due to tetrahedral (A) and octahedral (B) stretching vibration. Force constant for tetrahedral site (Kt) and octahedral site (Ko) were calculated from IR. SEM data suggests surface morphology to be nearly spherical and agglomerates. Cation distribution in ferrites was studied using Bertaut method. Prepared samples shows cubic spinel structure, these observations were supported by Rietveld refinement.

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Keywords

XRD, SEM, Bertaut, Rietveld, cation distribution, IR.

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