Polymer NiFe HafniumDioxide Steps ContactModeDots layers CrAu Water Blend oxide_layer ForceVolumeMapping CP-AFM YszSubstrate Celebration BlockCopolymer KelvinProbeForceMicroscopy Permalloy Memory Polyvinylidene Etch FastScan blended polymers PhthalocyaninePraseodymium alkanes Defects GranadaUniv PVAC Praseodymium polyvinyl acetate Pzt Optoelectonics membrane Galfenol Sidewall HfO2