Kinetic Properties of the Mn1-xGdxSe Solid Solutions

Romanova, O. B.; Aplesnin, S. S.; Khar'kov, A. M.; Kretinin, V. V.; Zhivul'ko, A. M. Source: PHYSICS OF THE SOLID STATE, 60 (9):1691-1697; 10.1134/S1063783418090263 SEP 2018

The results of kinetic study of the Mn1 – xGdxSe chalcogenide solid solutions with different substitute concentrations (0 ≤ x ≤ 0.15) in the temperature range of 80–400 K are reported. The difference between the Hall constant and thermopower signs has been found. The electron-type conductivity determined from the Hall constant and hysteresis of the IV characteristics have been explained by the existence of nanoareas with local electric polarizations. The sharp extrema observed in the temperature dependence of thermopower are explained by splitting of a narrow 4f subband by the crystal field.