Effect of alloying additions and atomic disordering on the physical properties of magnetic [Ni.sub.2]MnGa-based shape memory alloys

The effect of atomic disordering induced by melt quenching or severe plastic deformation via high-pressure torsion on the physical properties (thermal expansion coefficient, electrical resistivity, thermoelectric power, magnetization) of a stoichiometric [Ni.sub.50][Mn.sub.25][Ga.sub.25] alloy and nonstoichiometric [Ni.sub.50][Mn.sub.28.5][Ga.sub.21.5] alloys with 2 at % Cu or Co is studied in the temperature range 2 K [less than or equal to] T [less than or equal to] 900 K and the magnetic field range H [less than or equal to] 7 MA/m. DOI: 10.1134/S1063784212020120