Structural and electrical properties of double perovskite oxide LaPbFeTiO6 synthesized by a sol-gel process

The double perovskite structure is interesting for many researches in various fields of physics and their technological applications. The LaPbFeTiO6 compound is a very important for many technologies because it has dielectric and electrical properties. It has made an attractive semiconductor material for the electronic field, such as the realization of filters or capacitors. In this work, LaPbFeTiO6 was prepared by the sol-gel method. The structural, morphological, chemical and electrical properties of this sample were studied using different techniques. X-ray diffraction analysis revealed that the sample crystallized in the rhombohedral system with space group R (3) over barC. The chemical composition of the synthesized compound and the morphology of grain size were confirmed by energy dispersion spectroscopy analysis and scanning electron microscopy. The electrical conductivity and dielectric characterizations were studied as a function of frequency and temperature (200-380 K) by impedance spectroscopy. Indeed, the dielectric constant increases with increasing temperature. The AC conductivity obeys the Jonscher power law. The activation energy obtained from the complex impedance and the conductivity are close. The frequency dependence of the electrical impedance shows the existence of a relaxation phenomenon.

Automated summary

LaPbFeTiO6 compound, prepared by sol-gel method, is an important double perovskite structure with dielectric and electrical properties. Studies on its structural, morphological, chemical, and electrical properties revealed its potential applications in various technologies.