期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 33, 页码 14004-14007出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp103086y
关键词
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资金
- Natural Science Foundation of China [10575055, 10774079]
- Natural Science Foundation of Zhejiang Province [Y7080401, Y4090429]
- Natural Science Foundation of Ningbo [2008A610055, 2009A610056, 2009A610103, 2009A610036]
- Ningbo University
The dielectric properties of polyvinylidene fluoride (PVDF) and nickel (Ni) composites annealed under external magnetic fields were studied here. It was found that a similar percolation effect could be induced by an external longitudinal magnetic field in low filler PVDF/Ni composites. The permittivity of PVDF/Ni (95/5) composites showed a 4 times improvement at low frequency, and the dielectric loss was kept in the range of 0.1-0.4. In comparison to the traditional percolation effect caused by the involvement of conductive particles, field-induced anisotropic percolation may be another type of percolation effect, which can be used to improve the dielectric properties of polymer-based composites.
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