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MAGNETIC PROPERTY OFCoOULTRAFINE PARTICLE

Author

Listed:
  • SANSHIRO SAKO

    (Department of Physics, Faculty of Education, Mie University, Tsu, Mie 514, Japan)

  • KAZUNARI OHSHIMA

    (Laboratory of Physics, Matsumoto Dental College, Shiojiri 399–07, Japan)

  • MASAHIRO SAKAI

    (Instrument Center, Institute for Molecular Science, Myodaiji, Okazaki 444, Japan)

  • SHUNJI BANDOW

    (Instrument Center, Institute for Molecular Science, Myodaiji, Okazaki 444, Japan)

Abstract

The effect of the decrease in the coordination number of atoms in surface on the magnetic transition temperature was investigated experimentally and theoretically forCoOultrafine particles. The decreasing tendency of the Néel temperatureTNwith decreasing average size was confirmed in the size range from 2.0 to 3.0 nm through the ESR measurement. The similar tendency ofTNfor size was gained through the calculation ofTNin the mean-field theory using the prism model within the Ising thin-film model.

Suggested Citation

  • Sanshiro Sako & Kazunari Ohshima & Masahiro Sakai & Shunji Bandow, 1996. "MAGNETIC PROPERTY OFCoOULTRAFINE PARTICLE," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 3(01), pages 109-113.
    • Handle: RePEc:wsi:srlxxx:v:03:y:1996:i:01:n:s0218625x96000231
    DOI: 10.1142/S0218625X96000231
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