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|Title: ||Piezoelectric and pyroelectric properties of PZT/P (VDF-TrFE) composites with constituent phases poled in parallel or anti-parallel directions|
|Authors: ||Ng, Kar-lai|
Chan, Helen L. W.
|Subjects: ||Lead zirconate titanate|
Vinylidene fluoride-trifluoroethylene copolymer
|Issue Date: ||Nov-2000 |
|Citation: ||IEEE transactions on ultrasonics, ferroelectrics, and frequency control, Nov. 2000, v. 47, no. 6, p. 1308-1315.|
|Abstract: ||Composites of lead zirconate titanate (PZT)
powder dispersed in a vinylidene fluoride-trifluoroethylene copolymer [P(VDF-TrFE)] matrix have been prepared by compression molding. Three groups of polarized samples
have been prepared by poling: only the ceramic phase, the ceramic and polymer phases in parallel directions, and the two phases in antiparallel directions. The measured permittivities of the unpoled composites are consistent with the predictions of the Bruggeman model. The changes in the pyroelectric and piezoelectric coefficients of the poled composites with increasing ceramic volume fraction can be described by modified linear mixture rules. When the ceramic and copolymer phases are poled in the same direction, their pyroelectric activities reinforce while their piezoelectric activities partially cancel. However, when the ceramic and copolymer phases are poled in opposite directions, their piezoelectric activities reinforce while their pyroelectric activities partially cancel.|
|Rights: ||© 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
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|Type: ||Journal/Magazine Article|
|Appears in Collections:||MRC Journal/Magazine Articles|
AP Journal/Magazine Articles
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