WS2 oxide_layer STO pulsed_laser_deposition Magnetic PatternedSapphireSubstrat dichalcogenide HOPG single_layer Platinum Hafnia Vortex Zhi Hysteresys lift_mode Electronics atomic_layer bias_mode Foil Edwin StrontiumTitanate 2dMaterials Growth FailureAnalysis plastic Yeditepe_University Lateral Pores LateralForce GlassTemperature Boundary ElectrostaticForceMicroscopy domain_switching Temperature Adhesive