Fig. 1. Top-view SEM images of the Ni–Co films obtained by electrodeposition from (a) Bath 1, (b) Bath 2, and (c) Bath 3. (d–f) are the corresponding top-view SEM images after annealing of the films at 450 °C for 45 min. (g–i) depict the room-temperature hysteresis loops of the Si/Ti/Au/Ni–Co oxide samples in the as-annealed state (green curves) and after gating at −20 V for 30 min (orange curves).
