Structural, magnetic and elastic properties on stoichometric $Ni-Mn-Cu$ Heusler alloys

TL;DR

This study investigates the structural, magnetic, and elastic properties of Ni-Mn-Cu Heusler alloys, identifying Ni2MnCu as the most mechanically stable and interesting composition through analysis of equilibrium structures, elastic constants, and electronic density distortions.

Contribution

It provides a comprehensive analysis of the properties of Ni-Mn-Cu Heusler alloys, highlighting Ni2MnCu's stability and unique features compared to other compositions.

Findings

Ni2MnCu is the most mechanically stable alloy

Elastic constants and tetragonal distortions are characterized

Electronic density peaks are affected by structural distortions

Abstract

Heusler alloys with $Ni-Mn-Cu$ (all d-transition metal) composition have been studied; equilibrium structures for different magnetic configurations are found. Elastic constants and tetragonal distortion are analyzed. Distortion effect on densities of electronic state peaks are characterized. For this ternary family of alloys, we find that the one with the most interesting properties and mechanical stability is $Ni_2MnCu$.