Investigating the range of working temperatures of single-crystal piezoelectric elements based on crystals of the langasite family

Abstract

The mechanical properties, thermophysical parameters, and thermal stabilities of the phase composition of crystals of the langasite family are studied. The results from examining the temperature dependences of the thermophysical parameters (thermal conductivity, thermal capacity, and thermal expansion coefficient), phase composition, and mechanical strength of crystals allows us to predict the operation of piezodevices based on crystals of the langasite family in the temperature range of 25–1000°С in high-temperature modern sensor acoustic and piezoelectric equipment.