MAX Phase Ti2AlN for HfO2 Memristors with Ultra-Low Reset Current Density and Large On/Off Ratio
ADVANCED FUNCTIONAL MATERIALS(2024)
摘要
A Ti2AlN MAX phase layered thin film electrode and oxygen getter layer for HfO2-based two-terminal memristors is presented. The Ti2AlN/HfOx/Ti memristor devices exhibit enhanced resistive switching performance, including an ultra-low reset current density (< 10(-8) M Omega cm(2)), substantial on-off ratio (approximate to 6000), excellent multi-level functionality (approximate to 9 distinct states), impressive retention (up to 300 degrees C), and robust endurance (>200 million) as compared to conventional TiN and other alternative materials based memristors. Experimental measurements and modeling suggest that the distinctive combination of low thermal conductivity, high electrical conductivity, and unique ultra-thin layer-by-layer structure of the Ti2AlN MAX phase thin film contribute to this exceptional performance with good reproducibility and stability. The results demonstrate for the first-time the potential of this innovative sputtered MAX phase material for engineering energy-efficient, high-density non-volatile digital, and analog memory devices aimed toward next-generation sustainable artificial intelligence.
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关键词
Frequency-Domain Thermo-Reflectance,low power memory,MAX phase,multi-level memory,off-state current density,on-off ratio,resistive random-access memory
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