Grain size effects on the magnetic properties of ZnxMn1-xFe2O4 nanoferrites

J. Z. Msomi*, T. A. Nhlapo, T. Moyo, J. Snyman, A. M. Strydom

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Single phase nanoferrites bearing the chemical formula ZnxMn1-xFe2O4 (0≤x≤1.0) have been produced under low reaction temperature of 200 °C. The compounds were characterized by X-ray diffraction, Mössbauer and SQUID measurements. The particle size varies between 5 nm and 14 nm. The particle size dependence of the magnetic properties is investigated. Our results indicate spin-glass behavior at temperatures between 100 K and 200 K. The variation of Zn concentration has also significant effects on the structural and magnetic properties. The complex variation of lattice parameter with x is explained on the basis of redistribution of Zn atoms in both tetrahedral (A) and octahedral (B) sites. The 57Fe Mössbauer effect spectra show paramagnetic spin state in all the compounds.

Original languageEnglish
Pages (from-to)74-77
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume373
DOIs
Publication statusPublished - 1 Mar 2015
Externally publishedYes

Keywords

  • Ferrite
  • Magnetization
  • Mössbauer spectroscopy
  • Nano-particle

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