Varistor Resistance Permalloy Roughness Epoxy UnivCollegeLondon Magnetic Force Microscopy Fujian LiftMode fe_nd_b HBN Imprint InorganicCompound Reading Multiferroic_materials ULCA Oxide IIT-chennai Scratch Gallium Gong AIN IcelandSpar SKPM #Materials NanoLithography vertical_PFM CuSubstrate PolyimideFilm AtomicSteps CuParticle Memory DomainSwitching 2d_materials Styrene