Monte-Carlo calculation of the magnetocaloric effect in Ni-Mn-Ga alloys

摘要

The three-dimensional model for the theoretical description of the phase transformationsand the magnetocaloric effect in shape — memory Heusler Ni_(2+x)Mn_(1-x)Ga alloys (x=0.18 — 0.27) witha coupled magnetostructural phase transition by the classical Monte Carlo method is proposed. It isshown that the isothermal magnetic entropy change upon magnetic field variations from 0 to 5 Tand other magnetic properties are in good agreement with the available experimental data.