Piezoelectric properties and applications in the composite system of vinylidene fluoride and trifluoroethylene copolymer and pzt ceramics

Higashihata, Yoshihide; Yagi, Toshiharu; Sako, Junichi

doi:10.1080/00150198608238738

Cited by 14 publications

(4 citation statements)

References 11 publications

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“…At higher temperatures the molecules are more mobile and a higher concentration of PZT dipoles enables easier orientation of the molecules causing a steeper increase in the dielectric constant with temperature. A similar effect has been observed for PZTcopolymer composites by Higashihata [6].…”

Section: Discussionsupporting

confidence: 84%

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Piezoelectric properties of ferroelectric PZT-polymer composites

Venkatragavaraj

Satish

Vinod

et al. 2001

J. Phys. D: Appl. Phys.

163

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The most widely used material for active transducer applications is the ferroelectric ceramic PZT. Composites made of ferroelectric ceramics combined with polymers have several advantages over pure ceramics. Diphasic composites of PZT (and La/Ca modified PZT) combined with various polymers such as PVDF, PVC, PVA, epoxy resin and co-polymers have been widely studied and reported in the literature. In this paper we present the preparation and study of PZT-PVDF composites of 0-3 connectivity. The composites are prepared by two methods, namely (i) the solvent-cast method and (ii) the hot-press method. The piezoelectric strain coefficient (d33) is studied as a function of volume fraction of PZT in PVDF. The dielectric constant (k) is measured as a function of temperature and the piezoelectric voltage coefficient (g33) of the composite is determined. The experimental values of the dielectric constant, d33 and g33 of the composites are compared with the earlier reported values and the theoretical values proposed by Furukawa et al (Furukawa T, Ishida K and Fukada E 1979 J. Appl. Sci. 50 4904) and Bhimasankaram et al (Bhimasankaram T, Suryanarayana S V and Prasad G P 1998 Curr. Sci. 4 967). The composite with 0.5 PZT volume fraction prepared by the hot-press method is found to possess a reasonably high d33 value and exhibit good flexibility and stability with time.

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Section: Discussionsupporting

confidence: 84%

“…Higashihata et al [6] have measured the d 31 coefficient and the dielectric constant of PZT-PVDF and PZT-copolymer (VDF/TrFE) systems of 0-3 connectivity up to a volume fraction of 0.7 of PZT particles.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric properties of ferroelectric PZT-polymer composites

Venkatragavaraj

Satish

Vinod

et al. 2001

J. Phys. D: Appl. Phys.

163

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“…Fukuwa et al [5] have studied PZT-PVDF, PZT-PE and PZT-PVA composites of 0-3 connectivity. Higashihata et al [6] have measured the d 31 and the dielectric constant of PZT-PVDF and PZT-PVDF/TrFe systems of 0-3 connectivity up to a volume fraction of 0.7 PZT particles. Although much work has been focused on PZT ceramics, recently a solid solution of lead magnesium niobate and lead titanate (PbMg 1/3 Nb 2/3 O 3 -PbTiO 3 ), abbreviated as PMN-PT, has attracted attention as they have the advantage of negligible hysteresis, lower creep and lack of high voltage compared with PZT.…”

Section: Introductionmentioning

confidence: 99%

Electrical behaviour of PMN–PT–PVDF nanocomposite

Sen¹,

Mishra²

2008

J. Phys. D: Appl. Phys.

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Nanocomposites of polyvinyldene fluoride (PVDF) and a solid solution of lead magnesium niobate and lead titanate (0.65PMN–0.35PT) with varying composition ratios were prepared by the hot-press technique. The phase structure and morphology were studied by thermal analysis (DTA), x-ray diffraction and scanning electron microscopy. The PVDF sample showed an exothermic peak due to the crystallization of the PVDF phase, but with the addition of PMN–PT powders an extra peak appeared due to the crystallization of the pyrochlore phase present in the PMN–PT powder. The crystallite size of the prepared samples was found to be between 40 and 60 nm. The value of the relative permittivity increased with the increase in the ceramic concentration. The presence of a single semicircle confirmed the presence of the bulk effect only. The bulk conductivity indicated an Arrhenius type thermally activated process. The ac conductivity spectrum obeyed the Jonscher power law.

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“…Polymer-ceramic composites would be ideal replacements for both polymers and ceramics, as the composites would have the flexibility and light weight of the polymers and the high pyroelectric, piezoelectric and dielectric constants of the ceramics. In earlier work, it was shown that BaTiO3-PVDF composites with 70% weight fraction of BaTiO3 have high pyroelectric and dielectric constants [1][2][3][4][5][6][7][8][9][10][11][12]13]. The dielectric constant of PVDF polymer film is strongly dependent on the fabrication process, as PVDF exists in several crystalline phases and the predominance of individual phases can be controlled by the film fabrication process 1,14].…”

Section: Introductionmentioning

confidence: 99%

Photoelectret and electrophotographic properties of barium titanate-polyvinylidene fluoride composite film

Pillai¹,

Lew²,

Gavrielides³

et al. 1991

J Mater Sci

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Photoferroelectric barium titanate (BaTiO3)-polyvinylidene fluoride (PVDF) composite films in the ratio 70:30 are found to possess good photosensitivity in the visible region of the spectrum. Results on investigations of charge generation, trapping, recombination, discharge and retention properties of the composite film are presented in this paper. Photoinduced polarization is obtained in a BaTiO3-PVDF composite film by the simultaneous application of a d.c. field and illumination from an argon-ion laser or by white light. The dark (photo) polarization and the dark (photo) depolarization current decay characteristics of the polarized films have been studied under different experimental conditions. The studies show that the composite film retains good polarization for a fairly long time in the dark condition, and the magnitude of the depolarization current is comparable with that of BaTi03 single crystal. Under illumination, the decay is fast enough to make use of the film for electro-photographic applications.

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Piezoelectric properties and applications in the composite system of vinylidene fluoride and trifluoroethylene copolymer and pzt ceramics

Cited by 14 publications

References 11 publications

Piezoelectric properties of ferroelectric PZT-polymer composites

Piezoelectric properties of ferroelectric PZT-polymer composites

Electrical behaviour of PMN–PT–PVDF nanocomposite

Photoelectret and electrophotographic properties of barium titanate-polyvinylidene fluoride composite film

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