The adiabatic temperature changes in the vicinity of the first-order paramagnetic-ferromagnetic transition in the Ni-Mn-In-B heusler alloy

Igor Dubenko, Southern Illinois University Carbondale
Tapas Samanta, Southern Illinois University Carbondale
Abdiel Quetz, Southern Illinois University Carbondale
Alexander Kazakov, Lomonosov Moscow State University
Igor Rodionov, Lomonosov Moscow State University
Denis Mettus, Lomonosov Moscow State University
Valerii Prudnikov, Lomonosov Moscow State University
Shane Stadler, Louisiana State University
Philip W. Adams, Louisiana State University
Joseph Prestigiacomo, Louisiana State University
Alexander Granovsky, Lomonosov Moscow State University
Arcady Zhukov, Ikerbasque, the Basque Foundation for Science
Naushad Ali, Southern Illinois University Carbondale


The magnetocaloric properties of Ni-Mn-In-B Heusler alloy have been studied using direct measurements of the adiabatic temperature change (Δ TAD( T,H) , and indirectly by magnetization (M(T,H)), differential scanning calorimetry, and specific heat ( CP( T,H) measurements. The presence of a first-order ferromagnetic-paramagnetic transition has been detected for Ni 50 Mn 34.8 In 14.2 B at 320 K. The magnetocaloric parameters, i.e., the magnetic entropy change, Δ SM = (2.9- 3.2) J/kgK, and the adiabatic temperature change, Δ TAD = (1.3- 1.52) K, have been evaluated for Δμ0 H = 1.8 T from CP( T,H and M(T,H), and from CP( T,H and direct Δ TAD( T,H measurements, respectively, in the vicinity of the first-order transition temperature. The extracted magnetocaloric parameters are comparable to that of Gd. © 1965-2012 IEEE.