Document Type
Article
Publication Date
3-28-2011
Abstract
The adiabatic temperature changes (Δ Tad) in the vicinity of the Curie and martensitic transition temperatures of Ni50 Mn35 In15 and Ni50 Mn35 In14 Z (Z=Al and Ge) Heusler alloys have been studied using an adiabatic magnetocalorimeter of 250-350 K temperature interval for applied magnetic field changes up to ΔH=1.8 T. The largest measured changes were Δ Tad =-2 and 2 K near the martensitic (first-order) and ferromagnetic (second-order) transitions for ΔH=1.8 T, respectively. It was observed that Δ Tad ≈1 K for relatively small field changes (ΔH=1 T) for both types of transitions. The results indicate that these materials should be further explored as potential working materials in magnetic refrigeration applications. © 2011 American Institute of Physics.
Publication Source (Journal or Book title)
Applied Physics Letters
Recommended Citation
Kazakov, A., Prudnikov, V., Granovsky, A., Zhukov, A., Gonzalez, J., Dubenko, I., Pathak, A., Stadler, S., & Ali, N. (2011). Direct measurements of field-induced adiabatic temperature changes near compound phase transitions in Ni-Mn-In based Heusler alloys. Applied Physics Letters, 98 (13) https://doi.org/10.1063/1.3574088