The adiabatic temperature changes in the vicinity of the first-order paramagnetic-ferromagnetic transition in the Ni-Mn-In-B heusler alloy
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.
Publication Source (Journal or Book title)
IEEE Transactions on Magnetics
Dubenko, I., Samanta, T., Quetz, A., Kazakov, A., Rodionov, I., Mettus, D., Prudnikov, V., Stadler, S., Adams, P., Prestigiacomo, J., Granovsky, A., Zhukov, A., & Ali, N. (2012). The adiabatic temperature changes in the vicinity of the first-order paramagnetic-ferromagnetic transition in the Ni-Mn-In-B heusler alloy. IEEE Transactions on Magnetics, 48 (11), 3738-3741. https://doi.org/10.1109/TMAG.2012.2197596