Rare earth Sm3+ doped LaCoO3 cobaltite: Synthesis and characterizations

Perovskite Cobaltite La0.95Sm0.05CoO3(LSCO) has been reported. The solid state reaction route has been employed and the sample formation has been confirmed via x-ray diffraction characterization. The XRD data investigation revealed the mono-phase rhombohedral structure (R-3c). The distorted rhombohedral structure for La0.95Sm0.05CoO3 was further verified via Raman spectroscopic measurement. The dielectric measurement conveys good dielectric nature. The ac conductivity measurement reveals constant value of acat lower value of frequency but after a certain value of frequency, there is abrupt increase in the conductivity due to charge liberation at higher values of applied field. The four-probe dc measurement reveals the sample to be semiconducting in nature.