A model for the structural hysteresis in poling and thermal depoling of PZT ceramics
Autor: | George P. Simon, H. H. Law, J. Unsworth, P. L. Rossiter |
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Rok vydání: | 1995 |
Předmět: | |
Zdroj: | Journal of Materials Science. 30:4901-4905 |
ISSN: | 1573-4803 0022-2461 |
Popis: | A structural hysteresis associated with domain orientation during poling and thermal depoling of lead titanate zirconate (PZT) ceramics has been observed. The poled materials appear to lose their piezoelectric properties at a temperature somewhat below the Curie temperature and yet the domain configurations remain unchanged. The above phenomenon is successfully explained by a model which predicts that upon thermal depolarization, poled ceramics undergo transformation from the poled state into the antiferroelectric state before returning back to their original unpoled state. |
Databáze: | OpenAIRE |
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