Electromechanical Magnetization Switching

TL;DR

This paper demonstrates that electric fields can switch the magnetic moment in a composite multiferroic torsional oscillator through spin-rotation coupling, providing a new method for magnetic control.

Contribution

It introduces a novel approach for magnetization switching using electromechanical coupling in multiferroic systems, supported by analytical and numerical analysis.

Findings

180° magnetic switching achieved via electric field

Phase diagrams delineate parameter ranges for switching

Analytical and numerical models confirm the mechanism

Abstract

We show that the magnetic moment of a composite multiferroic torsional oscillator can be switched by the electric field. The 180$^o$ switching arises from the spin-rotation coupling and is not prohibited by the different symmetry of the magnetic moment and the electric field as in the case of a stationary magnet. Analytical equations describing the system have been derived and investigated numerically. Phase diagrams showing the range of parameters required for the switching have been obtained.