Charged Domain Wall and Polar Vortex Topologies in a Room-Temperature Magnetoelectric Multiferroic Thin Film
Kalani Moore, Eoghan O’Connell, Sinéad M. Griffin, Clive Downing, Louise Colfer, Michael Schmidt, Valeria Nicolosi, U. Bangert, Lynette Keeney, Michele Conroy
Abstract
. Finally, we show that polar vortex-type topologies also form at out-of-phase boundaries of stacking faults when internal strain and electrostatic energy gradients are altered. This study could pave the way for controlled polar vortex topology formation via strain engineering in other multiferroic thin films. Moreover, these results confirm that the subunit cell topological features play an important role in controlling the charge and spin state of Aurivillius phase films and other multiferroic heterostructures.
Topics & Concepts
MultiferroicsMaterials sciencePolarVortexDomain wall (magnetism)Thin filmCondensed matter physicsFerroelectricityDomain (mathematical analysis)Polar vortexNanotechnologyOptoelectronicsMagnetic fieldPhysicsMagnetizationThermodynamicsDielectricMathematical analysisAstronomyQuantum mechanicsMathematicsMultiferroics and related materialsFerroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materials