Aspects of fatigue and rapid depolarization in thin film PZT capacitors
| Autor: | M. S. Rodgers, R. D. Nasby, J.R. Schwank, S. L. Miller |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Materials science
business.industry Depolarization Condensed Matter Physics Polarization (waves) Ferroelectricity Ferroelectric capacitor Electronic Optical and Magnetic Materials law.invention Capacitor Microsecond Control and Systems Engineering law Materials Chemistry Ceramics and Composites Optoelectronics Electrical and Electronic Engineering Thin film business Voltage |
| Zdroj: | Integrated Ferroelectrics. 2:91-104 |
| ISSN: | 1607-8489 1058-4587 |
| DOI: | 10.1080/10584589208215735 |
| Popis: | Discrepancies in switched polarization values obtained with pulse measurements and hysteresis measurements have been observed in ferroelectric PZT thin film capacitors. We attribute the differences as partially due to the effects of rapid depolarization. To measure rapid depolarization a pulse was applied to pole a ferroelectric capacitor; and then a second identical pulse of the same polarity was applied after a specified time. Significant switched charge was observed after the second pulse. This depolarization was observed to occur in the time frame from microseconds to seconds. Secondly, the effect of cycling voltage on fatigue was studied on several samples processed by different vendors. A strong dependence on voltage was obtained for one sample which was characterized using a voltage activation approach. A second sample showed no appreciable effect of cycling voltage on fatigue. The difference in behavior demonstrates that the dependence of the fatigue mechanism on voltage can vary significantly dep... |
| Databáze: | OpenAIRE |
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