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Monte Carlo(MC) simulations, including multiple physical and chemical mechanisms, were performed to investigate the microstructure evolution of a conducting metal filament in a typical oxide-electrolyte-based Re RAM. It has been revealed that the growth direction and geometry of the conductive filament are controlled by the ion migration rate in the electrolyte layer during the formation procedure. When the migration rate is relative high, the filament is shown to grow from cathode to anode. When the migration rate is low, the growth direction is expected to start from the anode. Simulated conductive filament(CF) geometries and I–V characteristics are also illustrated and analyzed. A good agreement between the simulation results and experiment data is obtained.
Monte Carlo (MC) simulations, including multiple physical and chemical mechanisms, were performed to investigate the microstructure evolution of both It has been revealed that the growth direction and geometry of the conductive When the migration rate is low, the growth direction is expected to start from the anode. Both of them are illustrated and analyzed. A good agreement between the simulation results and the experiment data is obtained.