Behavior of Grüneisen's parameter of some metals at high pressures

Abstract

Changes of sample temperature associated with small adiabatic pressure changes were measured for the metals aluminum, copper, indium, iron, and lead, and the thermodynamic Grüneisen parameter γ is calculated from the relation γ = (K S /T) (∂T/∂P) S where K S is the adiabatic bulk modulus. Measurements were carried out to 33 kbar under hydrostatic conditions in a fluid cell with Bridgman's unsupported seals using an end‐loaded piston cylinder apparatus.