MINI REVIEW OF ELECTRICAL ASPECTS OF PEROVSKITES BASED OXIDES FOR VARIOUS APPLICATIONS

Abstract

The perovskite structure is named for the prototype CaTiO3 mineral called perovskite, which is generally a metal oxide with the formula ABO3, where B is a small transition metal cation and A is a larger s-, d-, or f-block cation. In a cubic perovskite, the larger cation A resides on the corners of the unit cell, the smaller cation B is in the centre of the unit cell, and the oxygen ions (O2) are on the centres of the faces. Perovskite oxides, with the general formula of ABO3, are considered as one of the promising materials for supercapacitors (SCs) as a result of their stable structure, rich oxygen vacancies, and highly reversible redox capability. Perovskite-type complex oxides constitute one of the most prominent classes of metal oxides which find key applications in di¬verse technological fields.One of the various applications is nanostructured perovskite solar cell. Recently a new wave of interest has risen on complex perovskite structure due to their wide use in fabrication of multilayer ceramic capacitors, electro-strictive actuators, and electromechanical transducers. In recent years, properties of perovskites at reduced dimensions have become considerable interest. To fully exploit the materials opportunities provided by nano-structured perovskites, it is important to characterize and understand their bulk and near-surface electronic structure along with the electric properties of these materials in the nano-regime, where surface and interface effects naturally play a dominant role. Perovskite oxide nanocrystals have important properties in ferroelectricity, piezoelectricity, dielectricity, ferromagnetism, magnetoresistance, and multiferroics.