Design for high-performance functional composite thermistor materials by glass/ceramic composing

摘要

A negative temperature coefficient-positive temperature coefficient (NTC-PTC) composite thermistor with high performance was designed by glass/ceramic composing. The material exhibited low resistivity and a large negative temperature coeffcient of resistivity. The minimum resistivity was the magnitude of l0_2 Ω cm, and the negative temperature coefficient of resistivity was better than -3 deg. C~-1. The results showed that the large negative temperature coefficient of resistivity was closely related to the glass phase, and the NTC-PTC functional composite material was a kind of grain-boundary-controlled material.