Kungl, Hans ; Hoffmann, Michael J. (2007):
Temperature dependence of poling strain and strain under high electric fields in LaSr-doped morphotropic PZT and its relation to changes in structural characteristics.
In: Acta Materialia, 55 (17), pp. 5780-5791. ISSN 13596454,
[Article]
Abstract
The performance of ferroelectric devices when operated over a wide temperature range is subject to considerable changes resulting from the temperature dependence of strain characteristics of the functional materials. The effects of temperature on poling strain and strain under unipolar cycling at electric fields of 2.5 kV mm−1 have been investigated for morphotropic donor doped lead zirconate titanate (PZT) with various Zr/Ti ratios between 20 and 160 °C. Remanent strain and strain under electric field show opposite behaviors with respect to their temperature dependence for all materials. The remanent strain was found to decrease at high temperature, whereas the field-induced strain under unipolar cycling increases. Depending on composition, there are marked differences with respect to the quantitative temperature behavior and the non-linearity of strain–temperature (SE–T) characteristics. From corresponding X-ray diffraction patterns the differences in strain behavior can be related to the specific temperature-induced structural changes in the materials.
| Item Type: | Article |
|---|---|
| Erschienen: | 2007 |
| Creators: | Kungl, Hans ; Hoffmann, Michael J. |
| Title: | Temperature dependence of poling strain and strain under high electric fields in LaSr-doped morphotropic PZT and its relation to changes in structural characteristics |
| Language: | English |
| Abstract: | The performance of ferroelectric devices when operated over a wide temperature range is subject to considerable changes resulting from the temperature dependence of strain characteristics of the functional materials. The effects of temperature on poling strain and strain under unipolar cycling at electric fields of 2.5 kV mm−1 have been investigated for morphotropic donor doped lead zirconate titanate (PZT) with various Zr/Ti ratios between 20 and 160 °C. Remanent strain and strain under electric field show opposite behaviors with respect to their temperature dependence for all materials. The remanent strain was found to decrease at high temperature, whereas the field-induced strain under unipolar cycling increases. Depending on composition, there are marked differences with respect to the quantitative temperature behavior and the non-linearity of strain–temperature (SE–T) characteristics. From corresponding X-ray diffraction patterns the differences in strain behavior can be related to the specific temperature-induced structural changes in the materials. |
| Journal or Publication Title: | Acta Materialia |
| Journal volume: | 55 |
| Number: | 17 |
| Uncontrolled Keywords: | Ferroelectricity; Piezoelectricity; X-ray diffraction; Phase transformations; Perovskites |
| Divisions: | DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A2: Manufacturing and characterization of PZT-ceramics with defined defect chemistry DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue Zentrale Einrichtungen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) |
| Date Deposited: | 27 Jul 2011 11:37 |
| Official URL: | http://dx.doi.org/10.1016/j.actamat.2007.06.035 |
| Additional Information: | SFB 595 A2 |
| Identification Number: | doi:10.1016/j.actamat.2007.06.035 |
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