Figure 3From: Abnormal coexistence of unipolar, bipolar, and threshold resistive switching in an Al/NiO/ITO structureI - V characteristics test of URS and BRS in the Al/NiO/ITO. The forming process is showed at the inset. (a) URS I-V curve. (b) BRS log(I)-V curve . (c) URS log(I)-log(V) curve; the blue axis shows the fitting log(I/V) − V1/2. (d) BRS log(I)-log(V) curve; the blue axis is the log(I/V) − V1/2.Back to article page