Open AccessУпругость 3D- и 2D-соединений XC (X=Si, Ge, Sn): модели Китинга и Харрисона
Author(s) -
С.Ю. Давыдов
Publication year - 2022
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2022.06.52387.300
Subject(s) - thermal expansion , thermodynamics , materials science , constant (computer programming) , elastic modulus , pressure coefficient , order (exchange) , monolayer , thermal , carbide , physics , metallurgy , nanotechnology , finance , computer science , economics , programming language
For the bulk and monolayer IV group carbides in the scope of Keating and/or Harrison models analytical expressions are obtained for second order elastic constants , sound velocities , third order elastic constants , pressure dependencies of and , Grüneisen constant, thermal expansion coefficient and temperature dependence of bulk moduli. It is shown that in the row of SiC – GeC – SnC values of all considered characteristics decrease while thermal expansion coefficient increases. All the model estimations are compared with experimental data and calculating results of other authors.