The Comparison of Direct and Indirect Methods for Determining the Magnetocaloric Parameters in the Heusler Alloy Ni50Mn34.8In14.2B

Authors

Igor Dubenko, Southern Illinois University Carbondale
Tampas Samanta, Southern Illinois University Carbondale
Abdiel Quetz, Southern Illinois University Carbondale
Alexander Kazakov, Moscow State University
Igor Rodionov, Moscow State University
Dennis Mettus, Moscow State University
Valerii Prudnikov, Moscow State University
Shane Stadler, Louisiana State University
Philip W. Adams, Louisiana State University
Joseph Prestigiacomo, Louisiana State University
Alexander B. Granovsky, Moscow State University
Arcady Zhukov, Basque Country University
Naushad Ali, Southern Illinois University Carbondale

Comments

© 2012 American Institute of Physics

Published in Applied Physics Letters, Vol. 100 No. 19 (2012) at doi: 10.1063/1.4714539

Abstract

The magnetocaloric properties of the Ni₅₀Mn_34.8In_14.2B Heusler alloy have been studied by direct measurements of the adiabatic temperature change (ΔT_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 Ni₅₀Mn_34.8In_14.2B at 320 K. The magnetocaloric parameters, i.e., the magnetic entropy change (ΔS_M = (2.9-3.2) J/kgK) and the adiabatic temperature change (ΔT_AD = (1.3-1.52) K), have been evaluated for ΔH = 1.8 T from C_P(T,H) and M(T,H) data and from direct ΔT_AD(T,H) measurements. The extracted magnetocaloric parameters are comparable to those of Gd.

Recommended Citation

Dubenko, Igor, Samanta, Tampas, Quetz, Abdiel, Kazakov, Alexander, Rodionov, Igor, Mettus, Dennis, Prudnikov, Valerii, Stadler, Shane, Adams, Philip W., Prestigiacomo, Joseph, Granovsky, Alexander B., Zhukov, Arcady and Ali, Naushad. "The Comparison of Direct and Indirect Methods for Determining the Magnetocaloric Parameters in the Heusler Alloy Ni50Mn34.8In14.2B." (May 2012).