Effect of Al doping on the retention behavior of HfO2 resistive switching memories
The retention behavior of HfO2-based memories is analyzed as a function of Al doping. The high resistance state reveals two main mechanisms of data retention degradation. Gradual resistance lowering increases with Al doping due to enhanced diffusion. High Al concentrations induce an increase of sharp resistance losses. Tailoring the Al concentration allows to limit an excessive retention degradation.
doping retention rram hafnium oxide aluminum