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Control of magnetic domain wall motion by electric fields has recentlyattracted scientific attention because of its potential for magnetic logic andmemory devices. Here, we report on a new driving mechanism that allows formagnetic domain wall motion in an applied electric field without the concurrentuse of a magnetic field or spin-polarized electric current. The mechanism isbased on elastic coupling between magnetic and ferroelectric domain walls inmultiferroic heterostructures. Pure electric-field driven magnetic domain wallmotion is demonstrated for epitaxial Fe films on BaTiO$_3$ with in-plane andout-of-plane polarized domains. In this system, magnetic domain wall motion isfully reversible and the velocity of the walls varies exponentially as afunction of out-of-plane electric field strength.

Reversible Electric-Field Driven Magnetic Domain Wall Motion