Hydrothermal synthesis, magnetic properties and characterization of CoFe2O4 nanocrystals

Seyedehmaryam Moosavi, Sarani Zakaria, Chin Hua Chia, Sinyee Gan, Nor Aziawati Azahari, Hatika Kaco

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Magnetic cobalt ferrite (CoFe2O4) nanocrystals were synthesized via the hydrothermal method and the crystallite size was measured using Sherrer's equation. Instrumental broadening was a significant parameter for determining crystallite size. The effect of annealing time and calcination on crystallite size and magnetic properties was discussed. It was found that the coercivity was highly dependent on the crystallite size. As the crystallite size increased from 61 to 68.2 nm, room temperature coercivity increased from 1488 Oe to 1700 Oe, while high coercivity (5.2 kOe) was achieved at lower temperature (80 K). It was found that the presence of hematite could affect the crystallite size after calcination.

Original languageEnglish
Pages (from-to)7889-7894
Number of pages6
JournalCeramics International
Volume43
Issue number10
DOIs
Publication statusPublished - 1 Jul 2017

Fingerprint

Hydrothermal synthesis
Crystallite size
Nanocrystals
Magnetic properties
Coercive force
Calcination
Hematite
Ferrite
cobalt ferrite
Cobalt
Annealing
Temperature

Keywords

  • Cobalt ferrite
  • Crystal growth
  • Hydrothermal
  • Magnetic properties
  • Nanostructures

ASJC Scopus subject areas

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

Cite this

Hydrothermal synthesis, magnetic properties and characterization of CoFe2O4 nanocrystals. / Moosavi, Seyedehmaryam; Zakaria, Sarani; Chia, Chin Hua; Gan, Sinyee; Azahari, Nor Aziawati; Kaco, Hatika.

In: Ceramics International, Vol. 43, No. 10, 01.07.2017, p. 7889-7894.

Research output: Contribution to journalArticle

Moosavi, Seyedehmaryam ; Zakaria, Sarani ; Chia, Chin Hua ; Gan, Sinyee ; Azahari, Nor Aziawati ; Kaco, Hatika. / Hydrothermal synthesis, magnetic properties and characterization of CoFe2O4 nanocrystals. In: Ceramics International. 2017 ; Vol. 43, No. 10. pp. 7889-7894.
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