Abstract:
The heat capacity of the Ni$_{50.5}$Ti$_{49.5}$ alloy in the microcrystalline and amorphous-nanocrystalline states has been measured in the range 2 K $\le T\le$ 310 K. Changes in the electronic and lattice contributions to $C_P(T)$ as a result of severe plastic deformation by torsion under high pressure in shape memory alloys have been discussed.