Dielectric and piezoelectric nonlinear properties of slightly textured lead barium niobate ceramics

Dielectric and piezoelectric responses of slightly textured, lead barium niobate ceramics are studied. The designed morphotropic phase boundary composition ( Pb 0.63 Ba 0.37 Nb 2 O 6) shows considerable nonlinear dielectric and piezoelectric responses. While these nonlinear behaviors lead to signifi...

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Bibliographic Details
Published in:Journal of applied physics 2019-01, Vol.125 (2)
Main Authors: Ochoa, Diego A., Casals, Jorge A., Venet, Michel, M’Peko, Jean-Claude, García, Jose E.
Format: Article
Language:English
Subjects:
Applied physics
Barium
Ceramics
Ceràmica industrial
Composition effects
Dielectric properties
Dielectrics
Dielectrics Piezo electricity Ferroelectric materials Ceramics Piezoelectric materials
Dielèctrics
Electric fields
Forging
Física
Niobates
Nonlinear control
Nonlinear response
Piezoelectric ceramics
Piezoelectricitat
Piezoelectricity
Texturing
Tungsten bronze
Àrees temàtiques de la UPC
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Summary:Dielectric and piezoelectric responses of slightly textured, lead barium niobate ceramics are studied. The designed morphotropic phase boundary composition ( Pb 0.63 Ba 0.37 Nb 2 O 6) shows considerable nonlinear dielectric and piezoelectric responses. While these nonlinear behaviors lead to significant instabilities of the functional properties, interesting features are revealed as a consequence of the texturing effect in the composition studied. An improved dielectric performance and a lower nonlinear piezoelectric response are observed when the electric field is applied to the sample in the forging direction. The results are quantitatively discussed in the framework of the Preisach and Rayleigh models. In this context, a decrease in the nonlinear response can be associated with a lower grain size related to the texture. The results of this work show that texturing is an effective route for controlling the undesirable nonlinear behavior of piezoceramics with tetragonal tungsten bronze structure.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.5067243