电子元件与材料2011，Vol.30Issue(3)：36-39,4.
Si掺杂对Mn-Co-Ni系NTC热敏电阻电性能的影响
Eeffect of Si dopng on the electric properties of Mn-Co-Ni type NTC thermistors
摘要
Abstract
Mn1.05-xCo0.92Ni0.03SixO4 (0≤x≤0.05) series NTC thermistor samples were prepared using the conventional ceramic technique. The effects of Si-doping amount on the phase structure and electric properties of the samples were studied using XRD, SEM and electric property measurements. The results show that in the range of 0≤x≤0.03, the spinel cubic phase and tetragonal phase co-existed as solid solution in the samples, and the resistivity at room temperature ρ25 and B25/50 value of the sample increased with increasing Si-doping amount. When 0.03＜x≤0.05, the tetragonal phase was absence and only spinel cubic phase existed in the samples, and the B25/50 value and ρ25 of the sample decreased with increasing Si-doping amount. The obtained sample with x = 0.03 sintered at l373 K show optimal electric properties with ρ25 of 79501Ω·cm and B25/50 value of 4142 K.关键词
NTC/热敏电阻/Si掺杂/尖晶石/电性能Key words
negative temperature coefficient/ thermistor/ Si doping/ spinel/ electric property分类
化学化工引用本文复制引用
王海珍,康雪雅,贾素兰,韩英..Si掺杂对Mn-Co-Ni系NTC热敏电阻电性能的影响[J].电子元件与材料,2011,30(3):36-39,4.基金项目
电子信息产业发展基金项目 （）
