, Volume 34, Issue 4, pp 297–302 | Cite as

Elastic behaviour of lead fluoride under pressure

  • R K Singh
  • C N Rao


The variation of the second-order elastic constants (SOECs) and the longitudinal and shear modulii with hydrostatic pressure for the lead fluoride (PbF2) has been investigated for the first time by means of a three-body force potential (TBP) model. The significance of three-body interactions (TBI) has been clearly demonstrated in reproducing the elastic constant variations and the pressure derivatives of SOECs of PbF2. The equation of state for this crystal has also been reported.


Fluorite anharmonic three-body interactions Cauchy discrepancy 




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Copyright information

© the Indian Academy of Sciences 1990

Authors and Affiliations

  • R K Singh
    • 1
  • C N Rao
    • 1
  1. 1.School of PhysicsBarkatullah UniversityBhopalIndia

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