Sound Velocity near the Tricritical Lines in TGSe–DTGSe System

Abstract

The temperature dependence of the ultrasonic velocity of TGSe–DTSe mixed crystals was measured near the two tricritical lines. It was found that there is a remarkable difference between the behavior of the anomalous parts of the sound velocity near the two tricritical lines, while there is no qualitative difference in the dielectric property.