Dielectric behavior of three-phase percolative Ni-BaTiO3/polyvinylidene fluoride composites

被引:341
作者
Dang, ZM [1 ]
Shen, Y [1 ]
Nan, CW [1 ]
机构
[1] Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
关键词
D O I
10.1063/1.1529085
中图分类号
O59 [应用物理学];
学科分类号
摘要
A three-phase percolative composite with a ferroelectric phase (BaTiO3) and metallic inclusions (Ni) embedded into polyvinylidene fluoride matrix was prepared by using a simple blending and hot-molding technique. Effective medium approximations and percolation theory were employed in order to design and describe the dielectric behavior of such three-phase composites. Our experimental results showed that the static dielectric constant of such a three-phase composite can reach above 800 when the Ni concentration is close to its percolation threshold. Such composites have a potential to become capacitors and can be easily fabricated into various shapes due to its flexibility. (C) 2002 American Institute of Physics.
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页码:4814 / 4816
页数:3
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