domain_switching HafniumDioxide Fe_film ContactModeDot MonoLayer Cross-section Potential SmalScan SKKU NTU TungstenDeposition 2d_materials Inorganic_Compound YszSubstrate Polypropylene LateralForce NCM\ UTEM India Worcester_Polytechnic_Institute Hafnium_dioxide SiWafer SingleCrystal WS2 PatternedSapphireSubstrat Permalloy pinpoint mode KelvinProbeForceMicroscopy Step mfm_amplitude TemperatureControllerStage CeramicCapacitor light_emission STM Display