文摘
Reversible resistive switching of Cr2O3 films was studied by use of conductive atomic force microscopy. Resistive switching in Cr2O3 films occurs as a result of Ag filament paths formed during electrochemical redox reactions. A large memory density of 100 Tbit/sq. inch was achieved with a small filament diameter of 2.9 nm under the action of a compliance current of 10 nA. A fast switching speed of 10 ns, high scalability, and low set/reset currents suggest that Cr2O3-based resistive memory is suitable for nanoscale devices. Keywords Chromium oxide resistive switching electrochemical redox reactions C-AFM Ag filament