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

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 $N{i}_{2}MnCu$.