The electrical behaviors of anatase titanium dioxide(TiO2) nanoparticles under high pressure

Electrical behaviors of anatase TiO2 nanoparticles were investigated at high pressure. Resistive switching effect was observed at different pressures and enhanced with pressure. The I-V characteristic curves show stable resistive switching performance as a function of pressure and also indicate that the optimal properties appear below 21.4 GPa. The larger current at high pressure was obtained, which should be ascribed to the semiconductor-metallic transformation. The conductive mechanism was discussed and high pressure phase transitions play a key role in resistive switching behaviors.