From memristor to resistive switching process

Figure 8: Characteristic I-V curves for ZA3 samples under different sweeps of (0 V–1 V–0 V)×5 and (0 V–(-1) V–0 V)×5, (0 V–2 V–0 V)×5 and (0 V–(-2) V–0 V)×5. Inset: Zoom-in on voltage sweep between 2 and -2 V.图8：ZA3样品在(0 V–1 V–0 V)×5、(0 V–(-1) V–0 V)×5、(0 V–2 V–0 V)×5及(0 V–(-2) V–0 V)×5这四种不同电压扫描循环下的特征电流-电压（I-V）曲线。插图：电压扫描区间为2 V至-2 V区域的放大图。