Magnets Foil Nickel Butterfly ElectrostaticForceMicroscopy ferromagnetic Litho IVSpectroscopy PinpointNanomechanicalMode dielectric trench SrTiO3 cross section LiBattery polyvinyl acetate EFM PetruPoni_Institute PvdfFilm CrAu Implant WPlug FrequencyModulation Magnetostrictive Gallium Treatment Magnetic Piezoresponse Wonseok neodymium_magnets MonoLayer MultiLayerCeramicCapacitor Jason BismuthVanadate Temperature PhaseTransition SSRM