Specific heat, thermal diffusion, thermal conductivity and magnetocaloric effect in Pr_0.6Sr_0.4Mn_1−xFe_xO₃ manganites

Highlights: • Investigated of specific heat, thermal diffusion, thermal conductivity, and magnetocaloric effect. • Magnetocaloric effect was investigated by direct and indirect method. • The phonon mechanism of heat transfer is dominant in the samples studied. - Abstract: The results of investigation of specific heat, thermal diffusion, thermal conductivity, and magnetocaloric effect in manganites Pr_0.6Sr_0.4Mn_1−xFe_xO₃ (x = 0 and 0.1) in the temperature range 80–350 K and in magnetic fields of 0 and 18 kOe are presented. When the atoms of Mn are replaced by Fe (x = 0.1) atoms, T_C shifts toward low temperatures at about 167 K, while the MCE varies insignificantly with ΔS_m = 2.05 J/kg K and 2.31 J/kg K for x = 0 and 0.10, respectively, which implies the possibility of regulating the area with a maximum MCE. The phonon mechanism of heat transfer is dominant in the samples studied.