Dielectric Property of Nickel/Calcium Copper Titanate/Polyvinylidene Fluoride Composite
This paper reports a nickel (100nm)/calcium copper titanate (1um)/ Polyvinylidene Fluoride three-phase composite prepared through a simple blending and hotmolding procedure. The microstructure and dielectric properties of the composites were analyzed using scanning electron microscope (SEM), and impedance analyzer. The results show that the dielectric constant εr rises from 49 to 140 with the loss tangent increasing from 0.23 to 0.31 when the volume fraction of nickle increases from 0％ to 22％ at 100 Hz and room temperature. The reasons for the high dielectric constant and relatively low loss of the three-phase composite were discussed in view of several aspects. Percolation theory, Maxwell-Garnett model (M-G) and effective medium theory model (EMT) were employed to analyze the dielectric behavior of composites.
Wenhu Yang Shuhui Yu Rong Sun Ruxu Du
Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences and The Chinese University of Hong Kong 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, P.R.China
国际会议
西安
英文
460-463
2010-08-16（万方平台首次上网日期，不代表论文的发表时间）