Abstract
We report structural, electrical, and magnetic properties of a parent and La-doped polycrystalline Pb2−xLaxCrO5. The X-ray study suggests that La-doping alters the lattice parameters of Pb2CrO5 and the solubility limit of La is 7.5%. Temperature dependent resistivity data exhibit that both doped and parent materials are semiconducting in nature. Furthermore, La-doping induces electrical conduction and significantly reduces the electrical bandgap of Pb2CrO5. A lowest bandgap of 1.16eV is observed in the samples containing 7.5% of La. Magnetic measurements reveal that Pb2CrO5 is characterized by a weak Curie–Weiss type paramagnetic behavior with the effective magnetic moment of 0.17μB. Also, La-doping has induced a ferromagnetic behavior with a Curie temperature of 293K. Observed physical properties are explained based on the possible oxygen vacancy and multiple oxidation states of Cr induced by La-doping.
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