R. G. Mitarov, S. N. Kallaev, Z. M. Omarov, M-Sh S. Khizriev, K. G. Abdulvakhidov, “Heat capacity of nanostructured SmFeO<nobr>$_3$</nobr>”, Fizika Tverdogo Tela, 2022, Volume 64, Issue 5,Pages <nobr>599

Thermal properties

Heat capacity of nanostructured SmFeO$_3$

R. G. Mitarov^a, S. N. Kallaev^b, Z. M. Omarov^b, M-Sh S. Khizriev^a, K. G. Abdulvakhidov^c

^a Daghestan State Technical University, Makhachkala, Russia
^b Daghestan Institute of Physics after Amirkhanov, Makhachkala, Russia
^c Southern Federal University, Rostov-on-Don, Russia

Abstract: The temperature dependence of the heat capacity of nanostructured SmFeO$_3$ ceramics obtained by mechanical activation in the temperature range of 120–800 K has been studied. It has been shown that the excess heat capacity of mechanically activated ceramics is due to: displacements of iron and samarium ions and with a change in the angle between FeO$_6$ oxygen octahedra.

Keywords: multiferroics, heat capacity, samarium ferrite, Schottky heat capacity, nanostructured ceramics, mechanical activation.

Received: 11.01.2022
Revised: 11.01.2022
Accepted: 13.01.2022

DOI: 10.21883/FTT.2022.05.52343.272