Nanostructural and electrical properties of LA0.5SR0.5CoO3

Abstract

A group of ABO3 perovskite-type oxides is currently under intensive studies for their potential as chemical sensing, ferroelectric memories, gas separation and computer devices. This group includes La[Formula: see text]Sr[Formula: see text]CoO3 (LSCO). In the present work, we have synthesized LSCO samples by using the sol–gel method and studied their nano structural and electrical properties with using the scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Current density–voltage ([Formula: see text]–[Formula: see text]) and Fourier transform infrared spectroscopy (FTIR) techniques. We synthesized nanoparticles with diameters between 50 and 100 nm by calcination of the pulverized gel powders, and then studied its structure. The band gap characteristics of the La[Formula: see text]Sr[Formula: see text]CoO3 structure were also analyzed. The obtained results show that La[Formula: see text]Sr[Formula: see text]CoO3 with favorable carrier mobility ([Formula: see text] cm2v[Formula: see text]s[Formula: see text]) and dielectric constant (16) exhibits a variety of interesting physical properties which include ferroelectric, dielectric, pyroelectric and piezoelectric behavior.