The effect of reaction temperature on the structural and magnetic properties of nano CoFe2O4

T. Prabhakaran, R. V. Mangalaraja, Juliano C. Denardin, J. A. Jiménez

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Nano cobalt ferrites (CoFe2O4) were co-precipitated at various reaction temperatures (60, 70 and 80 °C) for 1 h. The reaction temperature greatly influenced the crystallite size and the magnetic behaviours of the nano CoFe2O4. The mean crystallite size ranged from 9 to 15 nm with the increase in the reaction temperature and the intensity of metal oxide vibrations at 568–550 cm−1 were also inclined. The synthesized samples were in the stoichiometric ratio of 1:2 (Co:Fe) with roughly spherical morphology. The synthesized cobalt nanoferrites exhibited ferromagnetism at room temperature and 5 K, and the saturation magnetization increased from 6.4 to 20 emu/g with the crystallite size.

Original languageEnglish
Pages (from-to)5599-5606
Number of pages8
JournalCeramics International
Volume43
Issue number7
DOIs
StatePublished - 1 May 2017
Externally publishedYes

Keywords

  • Co-precipitation
  • Cobalt ferrite
  • Ferromagnetism
  • Reaction temperature
  • Spinel ferrites

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