摘要
实验发现,掺Mn的PTC钛酸钡样品损耗因子在样品的温度高于其居里点后,首先随温度缓慢变化,然后在某一温度处开始增大;其原因是:外场频率ω<ω1(ε)时,ε1(ω)是ω的增函数,温度增加时,τ迅速下降,故D增加。由此可知,随着温度增加,D首先缓慢变化,然后在某一温度处,迅速增加。
It is discovered that the dielectric loss fator of the PTC Titanium Barium sample doped Mn, above the Curie point, firstly, change slowly, afterwards, have undergone a fairly great rising in the high temperature region, which are caused by D increasing due to temperature increasing and τ decreasing.
出处
《云南师范大学学报(自然科学版)》
1999年第2期22-27,共6页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
云南省教委基金