Low-temperature synthesis of MnxMg1-xFe 2O4(x = 0-1) nanoparticles: Cation distribution, structural and magnetic properties

V. M. Khot, A. B. Salunkhe, M. R. Phadatare, N. D. Thorat, S. H. Pawar

Research output: Contribution to journalArticlepeer-review

Abstract

Nanoferrites having composition MnxMg1-xFe2O4(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) are synthesized by a low-temperature combustion method. The particle size measured from transmission electron microscopy and x-ray diffraction (XRD) patterns confirms the nanosized dimension of the as-prepared powder. From the analysis of XRD data with Scherrer's formula, the average crystallite size ranges from 23 to 33 nm and the lattice parameter ranges from 8.385 to 8.468. Substitution of Mn2+ in MgFe2O4 causes an increase in the lattice constant, and this moderately distorts the lattice. Magnetic properties such as magnetization (Ms), coercivity (Hc) and remanence (Mr) with increasing Mn 2+ concentration are studied at room temperature by a vibrating sample magnetometer. Substitution of Mn2+ for Mg2+ increases Ms from 34.5 to 54.5 emu g-1 and decreases Hc from 51.0 to 45.0 Oe. The results imply that the low-temperature combustion method is an efficient route for synthesis of nanoferrites without any extra calcination step. The as-prepared Mg-Mn ferrites are suitable for memory and switching circuits in digital computers.

Original languageEnglish
Article number055303
JournalJournal of Physics D: Applied Physics
Volume46
Issue number5
DOIs
Publication statusPublished - 6 Feb 2013
Externally publishedYes

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