利用脉冲激光沉积法在0.7％ Nb∶ SrTiO3衬底上制备了Co∶ ZnO薄膜,并构建了Pt/Co∶ ZnO/Nb∶ SrTiO3异质结器件.该器件表现出典型的双极性阻变效应,在正、负向电压作用下,器件电阻可以在低阻态和高阻态之间变换,电阻变换比值可达到104,阻态具有一定的保持性与耐久性,同时Co∶ ZnO薄膜的饱和磁化强度会产生与阻变相关联的可逆调控.结合ZnO薄膜阻变与磁性调控结果发现,氧空位在Co∶ ZnO/Nb∶ SrTiO3异质结的阻变及磁性调控中具有重要作用,并采用氧空位产生与湮灭结合载流子注入-束缚/解束缚模型解释阻变与磁性调控.
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