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Thermal expansion; cadmium fluoride; lead fluoride; Grüneisen parameter

The lattice parameters of CdF₂ andβ-PbF₂ have been determined over the temperature range 300–670 K. The coefficient of expansion at room temperature is 21·3 × 10⁻⁶ K⁻¹ and 25·4 × 10⁻⁶ K⁻¹ for CdF₂ and PbF₂ respectively and it increases linearly with temperature over the range of temperature covered. The Grüneisen parameter decreases with temperature in both the crystals.

Wahed Hussain¹ D B Sirdeshmukh¹

1. Physics Department, Kakatiya University, Warangal - 506 009, India

Published

December 1987

Manuscript received

30 July 1987