Synthesis and transport properties of solid solutions Sr1−xKxPbO3−yFy (0 ≤ x, y ≤ 0.20)

Polycrystalline solid solutions Sr1−xKxPbO3−yFy (0 ≤ x, y ≤ 0.20) were synthesized. Their structural properties were determined by X-ray diffraction. Resistivity and thermoelectric power were measured as functions of temperature. It was shown that a simultaneous substitution of potassium for strontium and fluorine for oxygen results in a transformation of conductivity from semiconductive to metallic at low temperatures. The results are discussed in connection with possible superconductivity in new families of doped perovskites.