Elasticity of the Sm1-xYxS alloy Based on Ultrasonic Measurements

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Soboleva, E.G.^1 ; Igisheva, A.L.^1 ; Wojciechowski, K.W.^2

Yurga Institute of Technology, Tomsk Polytechnic University, Leningradskaya st., 26, Yurga

652055, Russia^1

Institute of Molecular Physics, Polish Academy of Sciences, ul. Mariana Smoluchowskiego 17, Poznan

60-179, Poland^2

关键词: Alloy components;    Gruneisen parameters;    Metal phase;    Negative poisson's ratios;    Plasticity criterion;    Sm1-xYxS;    Valence transitions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012029/pdf
DOI  :  10.1088/1757-899X/142/1/012029

来源: IOP

【 摘 要 】

The elastic moduli, sound velocities, Gruneisen parameter, Poisson's ratios and brittleness-plasticity criterion ratios are studied for the Sm1-xYxS alloys. Their dependence on the concentration of alloy components including a valence transition from semiconductors into the metal phase is presented. Auxeticity (negative Poisson's ratio) is found for some concentrations.