A. G. Gamzatov, A. B. Batdalov, A. M. Aliev, L. N. Khanov, H. Ahmadvand, H. Salamati, P. Kameli, “Magnetocaloric effect in Pr1 − xAgxMnO3 manganites”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2010, Volume 91, Issue 7,Pages 369

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Magnetocaloric effect in Pr_{1 − x}Ag_xMnO₃ manganites

A. G. Gamzatov^a, A. B. Batdalov^a, A. M. Aliev^a, L. N. Khanov^a, H. Ahmadvand^b, H. Salamati^b, P. Kameli^b

^a Daghestan Institute of Physics after Amirkhanov
^b Department of Physics, Isfahan University of Technology

Abstract: The magnetocaloric effect in alternating magnetic fields has been investigated in Pr_{1 − x}Ag_xMnO₃ manganites with x = 0.05−0.25. The stepwise reversal of the sign of the magnetocaloric effect has been revealed in a weakly doped sample (x = 0.05) at low temperatures (~80 K). This reversal is attributed to the coexistence of the ferromagnetic and canted antiferromagnetic phases with different critical temperatures.

Received: 19.02.2010