Magnetocaloric Effect in Mn-Doped Topological Insulator Bi2Se3 Thin Films

Abstract

This work presents a simulation of the magnetocaloric effect (MCE) for Mn-doped topological insulator Bi₂Se₃ thin films using phenomenological model (PM). There is a good simulation of experimental magnetization for the Bi/Mn = 12.5 and Bi/Mn = 23.6 samples in low magnetic field along 〈1\(\bar {1}\)00〉 direction. The MCE parameters for the Bi/Mn = 12.5 and Bi/Mn = 23.6 samples in low magnetic field shift along 〈1\(\bar {1}\)00〉 direction has been determined. The high Mn content in Bi/Mn = 12.5 sample enhances MCE parameters more than Mn content lower sample. The MCE for Bi/Mn = 12.5 and Bi/Mn = 23.6 samples show practical use for cooling system in very low temperatures.