Features of the Piezoelectric Response for a Novel Four-Component Composite Structure

A novel composite is considered to demonstrate the high piezoelectric sensitivity and activity and having considerable electomechanical coupling. This composite consists of two basic laminated structures"single crystal-ceramic"(rods, 2-2 connectivity) and"polymer 1-polymer 2"(mat...

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Bibliographic Details
Published in:Ferroelectrics 2004-01, Vol.308 (1), p.53-65
Main Authors: Topolov, V., Glushanin, S., Panich, A.
Format: Article
Language:English
Subjects:
Ceramic
Composite
Laminated Structure
Piezoelectric Properties
Polymer
Single Crystal
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Summary:A novel composite is considered to demonstrate the high piezoelectric sensitivity and activity and having considerable electomechanical coupling. This composite consists of two basic laminated structures"single crystal-ceramic"(rods, 2-2 connectivity) and"polymer 1-polymer 2"(matrix, 2-2 connectivity). The single-crystalline and ceramic components are effectively aligned to form rods extended in the poling direction. These rods are embedded in the matrix to form the 1-3-type composite structure. The laminated structures and combinations of piezo-active and piezoelectrically inactive layers in the matrix provide large values of the effective piezoelectric coefficient g33∗, hydrostatic piezoelectric coefficients gh∗and dh∗, figures of merit d33∗g33∗and dh∗gh∗, and thickness electromechanical coupling factor kt∗, which are determined as functions of volume fractions for the above-mentioned components. In this paper, we calculate maximal values of dh∗, gh∗, and dh∗gh∗of the composites containing the laminated rods"0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3single crystal-Pb(Zr, Ti)O3-based ceramic."The role that the composite structure and its individual components play in determining the overall piezoelectric response is analysed.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190490508800