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Title: Structural and FMR lineshape analysis of Mn Zn-ferrite nanoparticles

The Mn{sub 0.25}Zn{sub 0.75}Fe{sub 2}O{sub 4} (MZF) nanoparticles of 3 to 5 nm size were synthesized by chemical coprecipitation method. The X-ray diffraction (XRD) patterns were well fitted with single phase spinel ferrite structure using Rietveld analysis as Fd-3m space group. The ferromagnetic resonance (FMR) spectra of MZF nanoparticles becomes more asymmetric with increase in particle size from 3 to 5 nm. The change in FMR line shape is attributed to the increase in ferromagnetic interactions and anisotropy in the system with increase in nanoparticles size. The decrease in total absorption of the FMR line with decreasing temperature at low temperatures indicates weak antiferromagnetic coupling between the octahedral and tetrahedral sublattices of the spinel ferrite system.
Authors:
;  [1]
  1. School of Physics, University of Hyderabad, Central University P.O, Hyderabad-500046 (India)
Publication Date:
OSTI Identifier:
22490302
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; ANTIFERROMAGNETISM; COPRECIPITATION; COUPLING; FERRITES; FERROMAGNETIC RESONANCE; FERROMAGNETISM; MANGANESE COMPOUNDS; NANOPARTICLES; PARTICLE SIZE; SPINELS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION; ZINC COMPOUNDS