Abstract:
The structure, electrical and magnetic properties of Ni$_{47-x}$Mn$_{42+x}$In$_{11}$ (0 $\le x\le$ 2) alloys were investigated and discussed with a change in the Ni/Mn ratio. It was found that the change in the type of the crystal lattice during the martensitic transformation is accompanied by a significant change in the electrical resistance by 45–50%. It is shown that all the studied alloys exhibit negative magnetoresistance and an inverse magnetocaloric effect. The maximum magnitude of the magnetoresistance in a magnetic field of 18 kOe was found in the Ni$_{46}$Mn$_{43}$In$_{11}$ alloy. The maximum value of the magnetocaloric effect was observed in the Ni$_{47-x}$Mn$_{42+x}$In$_{11}$ alloy at $Т$ = 325 K.
This study was performed within the framework of State Assignment from the Ministry of Education and Science of the Russian Federation (topics Structure, Alloys, and Magnet) with partial support from the Russian Foundation for Basic Research (project no. 20-03-00056).
Citation:
Yu. V. Kaletina, E. G. Gerasimov, P. B. Terentev, A. Yu. Kaletin, “Martensitic transformation, magnetotransport properties, and magnetocaloric effect in Ni$_{47-x}$Mn$_{42+x}$In$_{11}$ alloys (0 $\le x \le$ 2)”, Fizika Tverdogo Tela, 63:4 (2021), 521–526; Phys. Solid State, 63:4 (2021), 550–555