Theoretical investigation of the structural, electronic, elastic and thermodynamic properties of Ti2RuSn reverse-Heusler alloy in XA structure

Abstract

Structural, magnetic, electronic and elastic properties of the ternary Ti2RuSn alloy in reverseHeusler (XA) structure were investigated using density functional theory and generalized grandyent approach. It was seen that the calculated optimized lattice constant, total magnetic moment and electronic band structure were compatible with the available data in the literature. From the spin polarized band calculation, it was predicted that the Ti2RuSn alloy has a band gap of 0.405 eV in the spin-down orientation, while it shows metallic properties in the spin-up orientation and therefore has a semi-metallic ferromagnetic nature. The results of the second order elastic constants were found to meet the Born mechanical stability criteria for this alloy and to be mechanically stable. In addition, it was determined that this alloy, which has a B/G ratio of 3.23 according to Pugh criteria, has a ductile nature due to its greater than 1.75 limit and exhibits anisotropic behavior due to its anisotropy factor (A) of 2.88. It can be said that the investigated alloy is a promising candidate for spin electronics applications.