Open AccessМагнитострикция в сплавах Fe-=SUB=-75-=/SUB=-Ga-=SUB=-25-x-=/SUB=-Z-=SUB=-x-=/SUB=- (Z=Al, Ge, Si): расчет методом магнитного вращающего момента
Author(s) -
М.В. Матюнина,
М. А. Загребин,
В.В. Соколовский,
V. D. Buchelnikov
Publication year - 2021
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2021.11.51571.15s
Subject(s) - tetragonal crystal system , lattice constant , ternary operation , bulk modulus , materials science , magnetostriction , alloy , elastic modulus , ab initio , condensed matter physics , crystallography , density functional theory , ab initio quantum chemistry methods , crystal structure , thermodynamics , chemistry , diffraction , metallurgy , computational chemistry , magnetic field , physics , composite material , programming language , organic chemistry , quantum mechanics , computer science , optics , molecule
This work presents an ab initio study of the effect of a small addition of the third element of III and IV groups on the elastic and magnetoelastic properties of Fe75Ga25 alloy. The dependencies of the tetragonal elastic modulus C', magnetoelastic constant –b1, and the tetragonal magnetostrictive constant λ001 on the concentration of the Z-element in the cubic crystal structures A2 and D03 were obtained with the help of the density functional theory and the magnetic torque method in Fe75Ga25-xZx (Z = Al, Ge, Si) alloys (0≤x≤6 at.%). It is shown that the addition of Al and Si atoms leads to an increase in the tetragonal elastic modulus compared to the Fe75Ga25 binary alloy. A correlation was established in the dependence equilibrium lattice constants a0(x) and λ001(x) in the studied ternary alloys for the A2 structure.