Unusually high coercivity at room temperature in CoFe2O4 nanoparticles

C. N. Chinnasamy, B. Jeyadevan, O. Perales-Perez, Kazuyuki Tohji, Kozo Shinoda, A. Kasuya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Preparing high coercivity CoFe2O4 nanoparticles suitable for high-density recording is still a challenge. The theoretical values for a random system of spherical, non-interacting single-domain CoFe2O4 particles with cubic anisotropy have been predicted to be: Ms (300 K)=80.8 emu/gm, Hc(300 K)=5.3 kOe and Mr/Ms=0.83. Here, for the first time, we report the synthesis of CoFe2O4 nanoparticles of about 40 nm with unusual high coercivity of 4.3 kOe at room temperature (RT).

Original languageEnglish
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
DOIs
Publication statusPublished - 2002 Jan 1
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
CountryNetherlands
CityAmsterdam
Period02/4/2802/5/2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

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