Size and crystallinity-dependent magnetic properties of CoFe2O4 nanocrystals

Chin Hua Chia, Sarani Zakaria, M. Yusoff, S. C. Goh, C. Y. Haw, Sh Ahmadi, N. M. Huang, H. N. Lim

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

CoFe2O4 nanocrystals were synthesized by a wet chemical coprecipitation approach. In order to investigate the effect of degree of crystallinity and mean crystallite size of CoFe2O4 nanocrystals on the magnetic properties, a series of CoFe2O4 samples with different degree of crystallinity and mean crystallite size were produced by varying the synthesis and subsequent calcination temperatures. The higher synthesis and subsequent calcination temperatures have resulted in greater degree of crystallinity and bigger mean crystallite size of CoFe2O4 nanocrystals. The VSM studies showed that the saturation magnetization (Ms) and coercivity (Hc) of the CoFe2O4 nanocrystals possessed a linear relationship with the mean crystallite size.

Original languageEnglish
Pages (from-to)605-609
Number of pages5
JournalCeramics International
Volume36
Issue number2
DOIs
Publication statusPublished - Mar 2010

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Crystallite size
Nanocrystals
Magnetic properties
Calcination
Saturation magnetization
Coprecipitation
Coercive force
Temperature
cobalt ferrite

Keywords

  • A. Powders: chemical preparation
  • C. Magnetic properties
  • D. Ferrites
  • D. Spinels

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Size and crystallinity-dependent magnetic properties of CoFe2O4 nanocrystals. / Chia, Chin Hua; Zakaria, Sarani; Yusoff, M.; Goh, S. C.; Haw, C. Y.; Ahmadi, Sh; Huang, N. M.; Lim, H. N.

In: Ceramics International, Vol. 36, No. 2, 03.2010, p. 605-609.

Research output: Contribution to journalArticle

Chia, Chin Hua ; Zakaria, Sarani ; Yusoff, M. ; Goh, S. C. ; Haw, C. Y. ; Ahmadi, Sh ; Huang, N. M. ; Lim, H. N. / Size and crystallinity-dependent magnetic properties of CoFe2O4 nanocrystals. In: Ceramics International. 2010 ; Vol. 36, No. 2. pp. 605-609.
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AU - Ahmadi, Sh

AU - Huang, N. M.

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