(color online) FMR fields as a function of the applied voltage in (a) NiFe/Cu/PMN-PT(011) and (b) NiFe/PMN-PT(011) with the magnetic field along the [ ] direction. The insets revealed the modification mechanisms in these two aforementioned cases. (c) The pure charge-induced changes of the FMR fields (black) and voltage induced polarization (orange) under different voltages. The inset illustrated the charge accumulation on the NiFe/PMN-PT interface.^[62]