Influence of Poling Conditions on Material Properties of Lead Zirconate–Lead Titanate Ceramics
Autor: | Jiří Erhart, L. Rusin, Petr Půlpán |
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Rok vydání: | 2008 |
Předmět: | |
Zdroj: | Japanese Journal of Applied Physics. 47:7953-7958 |
ISSN: | 1347-4065 0021-4922 |
Popis: | Electromechanical properties have been measured by a resonant method for "very soft" (APC856), "soft" (APC850), and "hard" (APC840, APC841, and APC880) lead zirconate–lead titanate (PZT) ceramics as a function of poling temperature and poling electric field. Quantitative results are presented for piezoelectric coefficients d33, d31, k31, kp, and kt; for elastic stiffness c33E, elastic compliance s11E, and dielectric permittivity e33T. An elevated temperature has a significant effect on the poling efficiency for hard PZT ceramics – in particular, piezoelectric coefficients could be substantially (by 50% of their saturated value) increased by the appropriate choice of poling temperature. A similar effect is observed for the poling electric field for hard PZTs at lower temperatures, but the electric field intensity is less significant at higher poling temperatures. The longitudinal and transversal components of material tensors change in different extent as a result of poling. |
Databáze: | OpenAIRE |
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