“…4, was obtained using a relation SpB, T q S tot pB 0q ¡ |∆S M pB, T q| [15]. The expressions S tot pB 0q and |∆S M pB, T q| denote the total (lattice and magnetic) entropy, calculated from the experimental specific heat in B 0 T [11,16] and the absolute values of isothermal entropy change in applied external magnetic field, respectively. Applying the procedure depicted in Fig.…”