Термоэлектрические свойства керамики на основе катиондефицитных плюмбатов бария и стронция

Abstract

The BaPbxO1+2x and SrPbxO1+2x plumbates by ceramic method had been prepared, their lattice constants had been de- termined and their electrical conductivity (σ) and thermo-EMF (S) in air within 300–1100 K had been measured. BaP- bxO1+2x and SrPbxO1+2x compounds had orthorhombically distorted perovskite structure (except BaPb0,77O2,54 and BaPb0,83O2,66 oxides) and were n–type conductors. It had been found that sinterability and thermoelectric characteristics of the samples improved at increasing of lead oxide content in them. The maximal values of power factor had SrPb1,2O3,4: 7 206 mW·m–1·K–2 at 1000 К. The obtained results let us consider the SrPb1,2O3 as prospective material for high-temperature thermoelectroconversion.