The thermal conductivity and thermal diffusivity of KF as a function of pressure between 0 and 3.8 GPa

The plane heat-wave technique has been used to measure the thermal conductivity and diffusivity of KF. Measurements were performed at ambient temperatures and in the pressure range 0-3.8 GPa. A Leibfried-Schlomann analysis of the results shows they are consistent with three-phonon scattering mechanisms of acoustic phonons. The effect of the optic phonons in KF appears to be negligible.