Direct Measurements of Adiabatic Temperature Change in Ni49.9Mn37.03Sb12.3Fe0.77 Alloy due to Magnetocaloric Effect in the Temperature Range of Martensitic Transformation.

The magnetic and magnetocaloric measurements are reported for Ni49.9Mn37.03Sb12.3Fe0.77. The application of magnetic field was found to result in a shift of characteristic temperatures of the martensitic transformation (MT) by 0.7 K/T. Direct measurements of magnetocaloric effect (MCE) were employed to evaluate potential of this alloy for magnetic refrigeration. Peak values of MCE in magnetic field of 5 T were determined to be ~ −0.6 K in the interval of MT, and ~1 K in the vicinity of Curie temperature. [ABSTRACT FROM PUBLISHER]