Description:
<jats:p>The Ni50Mn37Sb13 ribbons were prepared by melt-spinning technique to overcome the brittleness of bulk. A single phase austenite with L21 structure was confirmed in the as-spun and annealed ribbons at room temperature similar to bulk. We observe increments in the martensite transformation temperature (TM) from 238 K to 252 K and in Curie temperature of austenite phase (TCA) from 336 K to 342 K after annealing the as-spun ribbon. The exchange bias, magnetic entropy change (ΔSM), and magnetoresistance are found to increase from 380 Oe to 415 Oe, 1 J/kg-K to 3 J/kg-K (ΔH=50 kOe), and −4% to −13% (ΔH=50 kOe), respectively, after annealing the as-spun ribbon. The possible reasons for observed behaviour are discussed.</jats:p>