Ultrasonic Measurements on Rochelle Salt Crystals

Abstract

A pulse technique at 10 Mc/sec. has been used to study the anomalous elastic properties of rochelle salt single crystals at temperature around the upper Curie temperature. The temperature dependence of foiled crystal constant $S_{44}^{}{}_{}{}^E$ and of the attenuation of waves which contain a component of shear strain in the $X$ crystallographic plane is reported. The attenuation measurements are formulated in terms of the interaction theory.