Pressure dependence of shear modulus C44 of platinum from 77 to 298 K and up to 253 MPa

The shear modulus C44 of platinum is measured at temperatures from 77 to 298 K and at pressures up to 253 MPa using the previously developed torsional-bar resonance technique. The anomalous temperature variation of the shear modulus, observed previously at zero pressure, is found to persist at higher pressures. The pressure derivative of C44 is found to decrease linearly with decrease of temperature.