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Title: (Bi0.5Na0.5)0.94Ba0.06TiO3 / P(VDF-TrFE) 0-3 composites poled with a sinusoidal electric field
Authors: Lam, KH
Wang, XX
Chan, HLW 
Keywords: Barium compounds
Bismuth compounds
Dielectric polarisation
Ferroelectric materials
Filled polymers
Hot pressing
Organic-inorganic hybrid materials
Piezoelectric materials
Polymer blends
Sodium compounds
Issue Date: 2006
Publisher: IEEE
Source: 15th ieee international symposium on the Applications of ferroelectrics, 2006 : isaf '06, July 30 2006-August 3 2006, Sunset Beach, NC, p. 101-104 How to cite?
Abstract: Bismuth sodium barium titanate [(Bi0.5Na0.5)0.94Ba0.06TiO3 or BNBT6] ceramic powder have been incorporated into a polyvinylidene fluoride-trifluoroethylene [P(VDF-TrFE) 70/30 mol%] copolymer matrix to form 0-3 composites. With the composition near the morphtrophic phase boundary (MPB) region, BNBT6 has relatively high piezoelectric properties. Polyvinylidene fluoride-trifluoroethylene [P(VDF-TrFE)] is a ferroelectric copolymer that has high piezoelectric and pyroelectric performance. BNBT6/P(VDF-TrFE) 0-3 composites with BNBT6 volume fraction Phi ranging from 0.05 to 0.3 were prepared using solvent casting to disperse the ceramic powder in the copolymer matrix followed by hot-pressing. The pyroelectric coefficient of the composites was measured as a function of Phi under different A.C. poling conditions. As both the BNBT6 inclusion and P(VDF-TrFE) matrix can be poled under similar conditions, the composites can be poled effectively after subjected to several cycles of sinusoidal electric field. The BNBT6 0-3 composites (poled with a.c. source) were found to have better pyroelectric properties than that of lead zirconate titante PZT / P(VDF-TrFE) 0-3 composites (poled with d.c. source).
ISBN: 978-1-4244-1331-7
978-1-4244-1332-4 (E-ISBN)
ISSN: 1099-4734
DOI: 10.1109/ISAF.2006.4387843
Appears in Collections:Conference Paper

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