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Pressure Dependence of Crystal Field Parameters in Rare Earth Intermetallic Compounds

  • H. R. Ott

Abstract

Pressure derivatives of crystal field parameters at zero pressure can be derived from measurements of the low temperature specific heat and thermal expansion of compounds exhibiting CEF-effects in their thermal properties. We demonstrate this for the singlet ground state systems PrSb and TmSb and for the two-level systems SmSb and CeTe. The results are in disagreement with expectations from a simple effective point charge model. They demonstrate the importance of other contributions to the crystal electric field than that expected from the charges on the ligand sites.

Keywords

Crystal Field Pressure Dependence Volume Dependence Crystal Field Parameter Point Charge Model 
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Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • H. R. Ott
    • 1
  1. 1.Laboratorium für FestkörperphysikETH-HönggerbergZurichSwitzerland

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