Improvement of resistive memory switching in NiO using IrO2

Abstract
For the development of resistivememory devices using NiO, improvements of several memory switching properties are required. In NiO memory cells with noble metal electrodes, broad dispersions of memory switching parameters are generally observed with continuous memory switchings. We report the improvements in minimizing the dispersions of all memory switching parameters using thin Ir O 2 layers between NiO and electrodes. The role of thin Ir O 2 layers on NiO growth and memory switching stabilization are discussed.