Elastic, thermophysical and ultrasonic investigation of tin monochalcogenides

Abstract

This work explores the investigation of tin monochalcogenides i.e. SnX (X: S, Se, Te) at room temperature (300[Formula: see text]K). The mechanical, thermophysical and ultrasonic properties of SnX (X: S, Se, Te) have been evaluated using the computed values of second- and third-order elastic constants (SOECs and TOECs). The SOECs and TOECs have been obtained using Born–Mayer potential model at 0[Formula: see text]K and 300[Formula: see text]K. The brittleness behavior of tin monochalcogenides is detected by Pugh’s ratio. It is observed that phonon–phonon interaction mechanism is dominant in tin monochalcogenides leading to high ultrasonic attenuation. The obtained temperature dependence behavior of tin monochalcogenides is validated via comparison with available works of literature data in previous works done experimentally as well as theoretically by others.