Lead-Free BiFeO3–BaTiO3 Ceramics: An Overview

Abstract

Multiferroic materials based on BiFeO 3 show properties like ferroelectricity and ferromagnetism at the same time. Inclination towards materials that are environment friendly, overcomes the problems related to lead-based materials. BiFeO 3 -BaTiO 3 binary system entirely takes the charge over lead enrich materials. The binary system of BaTiO 3 and BiFeO 3 consists of lead-free materials having characteristic properties like high piezoelectric coefficient, high Curie temperature, and the existence of morphotropic phase boundary (MPB). The studies were carried on the BiFeO 3 -BaTiO 3 multiferroic system from the last decade. BiFeO 3 -BaTiO 3 system exhibits outstanding electrical applications in devices such as actuators, multilayer capacitors, flexible display, and memory devices. The present chapter discusses some basics of multiferroics, specially BiFeO 3 ceramic, misfortune related to BiFeO 3 and BiFeO 3 -BaTiO 3 binary systems are addressed.