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We have demonstrated that by material engineering using different spices to dope HfO2, RRAM cell switching and endurance / retention reliability characteristics can be modulated. The changes in SET/RESET voltages, endurance optimal programming window and retention result mainly from the oxygen scavenging efficiency of Hf cap in presence of different dopants in HfO2. This impacts directly the formation...
Atomic layer deposited (ALD) resistive-switching random access memory devices with high uniformity, self-compliance, and forming-free behavior are demonstrated. Through comparative experiments, we find that appropriate deposition techniques and annealing conditions lead to self-compliance. The forming-free behavior originates from the oxygen deficiency due to the metal doping layer...
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