The coexistence of ferroelectric and magnetic orders in multiferroic
materials has evoked an enormous research in this frontier area
recently. The magnetic and ferroelectric coupling leads potential
application in new multifunctional devices [1–3]. In order to use the
multiferroic materials for applications, the magnetoelectric coupling
must be both large and active at room temperature. Among the
single-phase multiferroic materials, undoped Bismuth ferrite (BiFeO3
or BFO) and doped BFO have relatively high leakage current disrupting
the desirable ME coupling [4–6] at room temperature.