Electric field induced and enhanced magnetic properties of multiferroic material (BiFeO3)

Abstract

In this research work, enhancement and induction of magnetization and other related properties of ferro-electromagnet is reported. The ascertained enhancement and induction is supported by the Hamiltonian composed of itinerant electrons, localized electrons, and their mutual interactions. Using double time temperature dependent Green’s function formalism and equation of motion, the study exhibited the effect of external electric field that can induce and enhance the magnetization and other related parameters of the material. The expressions for spin wave energy, magnetization, magnetic susceptibility, and heat capacity of the system have been obtained and influenced by the action of an external electric field. These enhanced and induced functional responses of this material will present an opportunity to create and implement thin film devices that actively couple the magnetic and ferroelectric order parameters. The results obtained in this work are in a good agreement with the previous theoretical and experimental findings.