Resistive switching characteristics of core-shell nanoparticles of metal-oxide on flexible substrate

Abstract

Resistive switching characteristics of FePt/γ-Fe 2O 3 core-shell nanoparticle (NP) assembly on flexible substrate of polyethersulfone (PES) as being sandwiched by top and bottom Al electrodes were investigated for the potential as a flexible resistive switching memory. The NPs assembly was formed by solution process of dip-coating. The initial bipolar switching was observed in the voltage range < ±3 V, and the subsequent voltage sweep to higher voltage led to the increase of resistance, which is not typically observed in γ-Fe 2O 3 NP or other metal-oxide layer structure. Though the fundamental principle of resistive change in core-shell NPs is not clear, it demonstrated the feasibility of flexible memory application through solution-based processes. ©The Electrochemical Society.