Unusually high coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles

C. N. Chinnasamy, B. Jeyadevan, K. Shinoda, K. Tohji, D. J. Djayaprawira, M. Takahashi, R. Justin Joseyphus, A. Narayanasamy

Research output: Contribution to journalArticlepeer-review

224 Citations (Scopus)

Abstract

A study to investigate the coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles was presented. Rotational hysteresis loss (Wr) analysis demonstrated an average switching field of 17 kOe and a magnetic anisotropy field of 38 kOe for the 40 nm CoFe2O4 particles. The results suggested that the critical single-domain size of CoFe2O4 was about 40 nm.

Original languageEnglish
Pages (from-to)2862-2864
Number of pages3
JournalApplied Physics Letters
Volume83
Issue number14
DOIs
Publication statusPublished - 2003 Oct 6

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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