Fig. 4
Adiabatic temperature change caused by the magnetic field change from 100 Oe to 20 kOe as a function of initial temperature of ferromagnet; the computations were carried out using Eq. (12) (panel (a)), and orthodox Maxwell relations (panel (b)). The curves with maxima near TC = 110 K correspond to negative values Δ0, the curves with maxima near 120, 125, and 140 K correspond to positive Δ0 values. The horizontal dash-dotted line shows the maximum temperature change computed for the alloy, which does not undergo the structural transition (i.e., for j0 = 0), the vertical dashed line shows the Curie temperature, the stars indicate the points discovering the maximum difference between the results of given theory and orthodox one.
