Magnetic and transport properties in La1−Pr CoO3 single crystals

Abstract We have investigated the magnetic and electronic transport properties in the single crystals of La 1− x Pr x CoO 3 system. The signs of the thermoelectric power and the Hall coefficient change from positive to negative by the 10% Pr-doping in LaCoO 3 , and they change from negative to positive by 10% La-doping in PrCoO 3 . These results imply that the sign of the carrier of the system changes through the hybridization between Pr(4f) and O(2p π ) orbitals depending on the Pr concentration.