The magnetocaloric properties of the Ni50Mn34.8In14.2B Heusler alloy have been studied by direct measurements of the adiabatic temperature change (Delta T-AD(T,H)) and indirectly by magnetization (M(T,H)), differential scanning calorimetry, and specific heat (C(T,H)) measurements. The presence of a first-order ferromagnetic-paramagnetic transition has been detected for Ni50Mn34.8In14.2B at 320 K. The magnetocaloric parameters, i.e., the magnetic entropy change (Delta S-M = (2.9-3.2) J/kgK) and the adiabatic temperature change (Delta T-AD = (1.3-1.52) K), have been evaluated for Delta H = 1.8 T from C-P(T,H) and M(T,H) data and from direct Delta T-AD(T,H) measurements. The extracted magnetocaloric parameters are comparable to those of Gd. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4714539]
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