Room temperature magnetic-field manipulation of electrical polarization in multiferroic thin film composite BiFeO3/La2/3Ca1/3MnO3

Authors

Zhenxiang Cheng, University of WollongongFollow
Xiaolin Wang, University of WollongongFollow

RIS ID

20023

Publication Details

Cheng, Z & Wang, X (2007), Room temperature magnetic-field manipulation of electrical polarization in multiferroic thin film composite BiFeO3/La2/3Ca1/3MnO3, Physical Review B (Condensed Matter and Materials Physics), 75(17), pp. 172406-1-172406-4.

Abstract

The electrical polarization in an epitaxially BiFeO₃ film grown on La_2/3Ca_1/3MnO₃/SrTiO₃ is observed to be enhanced greatly by a magnetic field at room temperature. The simultaneous ferromagnetic order and ferroelectric polarization shown by the BiFeO₃ film causes the strong coupling of the magnetic and ferroelectric domains in the BiFeO₃ films. It was proposed that the activation energy for the electrical polarization domains switching is reduced by the application of a magnetic field. As a result, the electrical polarization that can be switched by an electrical field is increased by the magnetic field.