Specific heat and magnetocaloric effect in Pr1-xAgxMnO3 manganites
A. G. Gamzatov, A. M. Aliev, A. B. Batdalov, H. Ahmadvand, H., Salamati, P. Kameli
TL;DR
This study investigates the magnetocaloric effect in Pr1-xAgxMnO3 manganites, revealing a sign reversal at low temperatures due to phase coexistence, which could impact magnetic cooling technologies.
Contribution
It provides new insights into the magnetocaloric behavior and phase coexistence in Pr1-xAgxMnO3 manganites with varying silver doping levels.
Findings
Sign reversal of the magnetocaloric effect at ~80 K in x=0.05 sample
Coexistence of ferromagnetic and canted antiferromagnetic phases
Different critical temperatures for magnetic phases
Abstract
The magnetocaloric effect in alternating magnetic fields has been investigated in Pr1-xAgxMnO3 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.
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