High field electrical behaviour in lithium�?�phospho�?�vanadate glass system

[摘要] The high field electrical switching behaviour of lithiumâ€�?�phosphoâ€�?�vanadate glasses has been studied by determining the currentâ€�?�voltage characteristics. The investigated glasses exhibit temperature, thickness and composition dependent trends. At low current, the 𝐼â€�?�ð�?��?? characteristics obey Ohm’s law followed by a negative resistance region where the bulk behaviour dominates and at higher values of current the sample goes to a low resistance state. The studied glasses exhibit memory type switching. It is suggested that electrical switching is due to the formation of conducting channels that are due to electronic origin while thermal effects dominate once the channels are formed resulting in crystallization.

[学科分类] 材料工程

[关键词] High field electrical behaviour;lithiumâ€�?�phosphoâ€�?�vanadate glass system.