domain_switching Perovskite Jason Organic TiO2 tip_bias_mode MfmAmplitude MagneticPhase self_assembly Beads LateralForce UTEM Croatia Ferrite Fet Magnetic Force Microscopy FastScan organic_polymer Adhesion pulsed_laser_deposition Laser FM-KPFM Plug Ni81Fe19 MagneticForceMicroscopy Mapping vertical_PFM SurfaceChange IMT_Bucharest oxide_layer PolyStylene Array VerticalPFM Defects Dopped