Abstract
In this study, we fabricate resistive switching random access memory (ReRAM) devices constructed with a Al/<TEX>$HfO_2$</TEX>/ITO structure on glass substrates and investigate their memory characteristics. The hafnium oxide thin film used as a resistive switching layer is sputtered at room temperature in a sputtering system with a cooling unit. The Al/<TEX>$HfO_2$</TEX>/ITO device exhibits bipolar resistive switching characteristics, and the ratio of the high resistance (HRS) to low resistance states (LRS) is more than 60. In addition, the resistance ratio maintains even after <TEX>$10^4$</TEX> seconds.
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