The adiabatic temperature change (Δ Tad) in Ni45Mn43CoSn11 has been measured by a direct method in magnetic field changes up to 14 T. Large reversible magnetocaloric effects resulting in Δ Tad of about =-11 and 5 K have been observed for magnetic field changes of 14 T at the magnetostructural (TA ∼ 260 K) and magnetic transitions (TC ∼ 320 K), respectively. The impact of the thermomagnetic history on Δ Tad at high magnetic fields has been reported. The significant observed changes in the relaxation time of Δ Tad, depending on the type of the phase transitions, magnetization, and demagnetization cycle are discussed.
Publication Source (Journal or Book title)
IEEE Transactions on Magnetics
Pandey, S., Koshkid'ko, Y., Dubenko, I., Cwik, J., Aryal, A., Granovsky, A., Lahderanta, E., Stadler, S., & Ali, N. (2019). Adiabatic Temperature Changes at Structural and Magnetic Phase Transitions in Ni45Mn43CoSn11 at High Magnetic Fields. IEEE Transactions on Magnetics, 55 (2) https://doi.org/10.1109/TMAG.2018.2866430