Anomalies in Young’s modulus behavior after annealing in polycrystalline SmS

• 作 者: V.V.Kaminskii N.V.Sharenkova G.A.Kamenskaya M.A.Grevtsev Yu.V.Lyubimova
• 机 构: ITMO University,Saint Petersburg 197101,Russia;Ioffe Physical Technical Institute,Russian Academy of
• 出 处: 半导体学报（英文版）
• 发表日期: 2021年3期
• 关键词: SmS ultrasonic spectroscopy Young’s modulus annealing in polycrystals Bordoni re

In this paper,the dependencies of Young’s modulus and attenuation decrement on samarium sulfide polycrystals (SmS) under various annealing temperatures are studied by the piezoelectric ultrasonic composite oscillator technique at a frequency of 100 kHz in the temperature range of 80-300 K.A decrease in Young’s modulus with an increase of the annealing temperature due to the texturing of the material was revealed.At the same time,attenuation peaks were observed at temperatures about 90 and 125 K,presumably due to Niblett-Wilks and Bordoni relaxations.