epitaxy TiO2 GaAs Ni81Fe19 Lattice Current pulsed_laser_deposition Materials Metal Galfenol InsulatorFilm Piranha hetero_structure Iron Implant Patterns polymeric_arrays AtomicSteps Moire Aluminum ito_film mechanical property Varistor AlkaneFilm Scanning_Thermal_Microscopy TempControl suspended_graphene atomic_steps DomainSwitching FuelCell Conduct SFAs SKKU Yeditepe FrequencyModulation