Mfm STO HDD mechanical_property LeakageCurrent Ananth ElectroDeposition ForceMapping CHRYSALIS_INC PUR Magnets Graphite SiliconeOxide Monisha hard_disk_media Aluminum HanyangUniv ConductiveAFM atomic_layer Tin disulfide ScanningSpreadingResistanceMicroscopy Inorganic_Compound GaAs Chromium Ram Dopped SKPM OpticalWaveguides Electronics TiO2 SurfaceChange Magnetic Force Microscopy GalliumPhosphide Barium_titanate AtomicSteps