Mechanical force involved multiple fields switching of both local ferroelectric and magnetic domain in a Bisub5/subTisub3/subFeOsub15/sub thin film

摘要

Mechanical force applied on the surface of Bi5Ti3FeO15 film generates by an AFM tip will effectively drive a transition of the local ferroelastic strain state, reverse both the polarization and magnetization in a way similar to an electric field. Manipulation of both ferroelectric and magnetic domains of Bi5Ti3FeO15 thin film using electric field and external mechanical force is reported, which confirms the magnetoelectric coupling in Bi5Ti3FeO15, indicates the electric and magnetic orders are coupled through ferroelasticity. Current work provides a framework for exploring cross-coupling among multiple orders and potential for developing novel nanoscale functional devices.