Pressure Dependence of the Curie Temperature in FePt and CoPt Alloys.

DOI Web Site 6 References
  • Kyuji S.
    Research Center for Materials Science at Extreme Conditions, Osaka University
  • Endo S.
    Research Center for Materials Science at Extreme Conditions, Osaka University
  • Ono F.
    Department of Physics, Okayama University
  • Kanomata T.
    Department of Applied Physics, Tohoku Gakuin University

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  • Pressure Dependence of the Curie Temper

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Abstract

Measurements of the pressure dependence of the Curie temperatures in ordered FePt and CoPt alloys were made in a high pressure region up to 12 GPa by using a double-stage multianvil apparatus. For both aloys TC decreased almost linearly by applying pressure with a rate of -5. 98 K/GPa for FePt and -6. 54 K/GPa for CoPt. These rates can be explained in accordance with the Heine's law if it is assumed that Tc is inversely proportional to the band-width.

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