Кинетические свойства твердых растворов Mn-=SUB=-1-x-=/SUB=-Gd-=SUB=-x-=/SUB=-Se

Abstract

AbstractThe results of kinetic study of the Mn_1 – x Gd_ x Se 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 I – V 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 4 f subband by the crystal field.