Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
5
From page :
695
To page :
699
Abstract :
Bismuth sodium barium titanate/poly(vinylidene fluoride-trifluoroethylene) 70/30 [(Bi0.5Na0.5)0.94Ba0.06TiO3–P(VDF-TrFE)] 0–3 composites were prepared by a hot-press method for different volume fractions of (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramic powder in a P(VDF-TrFE) 70/30 copolymer matrix. The relative permittivity and dielectric loss of the composites increased with increase in the volume fraction of the ceramics, which well follows the Bruggeman model. The polarization responses of the composites were strongly dependent on the ceramic volume fraction. The composites with a higher ceramic volume fraction showed an increase in remanent polarization. At room temperature, a 0.3(Bi0.5Na0.5)0.94Ba0.06TiO3–0.7P(VDF-TrFE) composite showed a relative permittivity εr=30, remanent polarization Pr=12 μC/cm2 and coercive field Ec=44 kV/mm.
Journal title :
Acta Tropica
Serial Year :
2004
Journal title :
Acta Tropica
Record number :
1748442
Link To Document :
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