Open AccessCrystallogeometry and energy of planar superstructure defects of ternary alloys
Author(s) -
Albert R. Khalikov,
В Т Нгуен,
В. А. Валитов,
Sergey V. Dmitriev
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1008/1/012058
Subject(s) - superstructure , materials science , ternary operation , planar , shear (geology) , stoichiometry , condensed matter physics , crystallography , composite material , thermodynamics , physics , chemistry , organic chemistry , computer graphics (images) , computer science , programming language
Planar superstructure defects have a great influence on the mechanical and functional properties of ternary Heusler alloys; however, their complete crystallogeometric and energy analysis is lacking in the literature. In this work, Heusler alloys of stoichiometric composition X 2 YZ of the L 2 1 superstructure are analysed. An expression is given for finding the planes of occurrence of all possible planar superstructure defects. It is established that among them there are only shear and thermal antiphase boundaries. The results obtained are useful for analyzing slip systems of the considered family of alloys and the configuration of magnetic domain walls.