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http://hdl.handle.net/10397/4041
| Title: | Electrical conductivity enhanced dielectric and piezoelectric properties of ferroelectric 0-3 composites | Authors: | Wong, CK Shin, FG |
Issue Date: | 15-Mar-2005 | Source: | Journal of applied physics, 15 Mar. 2005, v. 97, no. 6, 064111, p. 1-9 | Abstract: | We have investigated the effects of electrical conductivity of the constituents on the dielectric and piezoelectric properties of ferroelectric 0-3 composites. The time-dependent internal electric fields are first derived, which can be induced by an applied ac field in dielectric measurement or stress in piezoelectric measurement. Our previously developed model [C. K. Wong, Y. M. Poon, and F. G. Shin, J. Appl. Phys. 90, 4690 (2001)] has been extended to include the additional contribution from the electrical conductivities and the frequency of measurement, which can be significant for ceramic/polymer composites possessing high conductivity in the matrix phase. The model provides an explanation to the surprisingly high piezoelectric d₃₃values reported by, e.g., Chen et al. [Sens. Actuators, A 65, 194 (1998)]. Explicit expressions for the transient and steady-state responses are given and the effective permittivity, d₃₃, d₃₁, and d[sub h] coefficients have been derived. | Keywords: | Lead compounds Filled polymers Ferroelectric materials Electrical conductivity Permittivity Transients Piezoelectric materials |
Publisher: | American Institute of Physics | Journal: | Journal of applied physics | ISSN: | 0021-8979 | EISSN: | 1089-7550 | DOI: | 10.1063/1.1862317 | Rights: | © 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in C. K. Wong & F. G. Shin, J. Appl. Phys. 97, 064111 (2005) and may be found at http://link.aip.org/link/?jap/97/064111. |
| Appears in Collections: | Journal/Magazine Article |
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| Wong_Electrical_piezoelectric_properties.pdf | 159.92 kB | Adobe PDF | View/Open |
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