Relaxation phenomena in adiabatic temperature changes near magnetostructural transitions in Heusler alloys

Authors

Yury Koshkid'ko, Wlodzimierz Trzebiatowski Institute of Low Temperature and Structure Research of the Polish Academy of Sciences
Sudip Pandey, Southern Illinois University Carbondale
Jacek Cwik, Wlodzimierz Trzebiatowski Institute of Low Temperature and Structure Research of the Polish Academy of Sciences
Igor Dubenko, Southern Illinois University Carbondale
Anil Aryal, Southern Illinois University Carbondale
Alexander Granovsky, Lomonosov Moscow State University
Damian Szymanski, Wlodzimierz Trzebiatowski Institute of Low Temperature and Structure Research of the Polish Academy of Sciences
Shane Stadler, Louisiana State University
Erkki Lähderanta, LUT University
Naushad Ali, Southern Illinois University Carbondale

Document Type

Article

Publication Date

4-25-2020

Abstract

The relaxation processes of the adiabatic temperature changes (ΔTad) at the phase transitions in Ni45Mn43CoSn11, Ni50Mn36.5In13.5, and Ni50Mn35In14.25B0.75 Heusler alloys with different magnetic structures have been studied using a direct extraction method in magnetic fields up to 14 T. It has been found that ΔTad exhibits short relaxation times (less than 10−1 (s)) in the vicinity of the second order phase transitions at the Curie temperatures. The relaxation times of the first order martensitic transitions strongly depend on the latent heat of the transition and can be characterized by a logarithmic law.

Publication Source (Journal or Book title)

Journal of Alloys and Compounds

Recommended Citation

Koshkid'ko, Y., Pandey, S., Cwik, J., Dubenko, I., Aryal, A., Granovsky, A., Szymanski, D., Stadler, S., Lähderanta, E., & Ali, N. (2020). Relaxation phenomena in adiabatic temperature changes near magnetostructural transitions in Heusler alloys. Journal of Alloys and Compounds, 821 https://doi.org/10.1016/j.jallcom.2019.153402