Academic Journal
Possibilities of the practical use of a stationary strain gradient in the interelectrode volume of unpolarized ferroceramic plates
| العنوان: | Possibilities of the practical use of a stationary strain gradient in the interelectrode volume of unpolarized ferroceramic plates |
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| المؤلفون: | Yu. N. Zakharov, V. P. Sakhnenko, I. A. Parinov, I. P. Raevsky, M. A. Bunin, V. A. Chebanenko, M. A. Zaerko, E. I. Sitalo, A. A. Pavelko, L. I. Kiseleva |
| المصدر: | Journal of Advanced Dielectrics, Vol 10, Iss 01n02, Pp 2060010-1-2060010-7 (2020) |
| بيانات النشر: | World Scientific Publishing, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | strain gradient, unpolarized ferroceramic, pyroelectric effect, bolometer, Electricity, QC501-721 |
| الوصف: | It has been established that in plates made of hot-pressed ferroelectric ceramics PZT-19 (Tc=300∘C), after metal electrodes from Ag are burned into opposite surfaces with different depths of mechanical damage, counter-directional stationary deformation gradients and, accordingly, internal electric displacement fields create a stationary flexoelectric effect. As a result, unpolarized ceramics below the Curie temperature become a pyroelectric, and above it become a pyroelectric bolometer. After polishing the less damaged surface and replacing the Ag (valency v=3) electrode with Cr (v=6) by thermal evaporation in vacuum from the intact surface, a new thermally stable polarization is created, directed from the damaged surface in the interelectrode volume. Such plates have an asymmetric dielectric hysteresis loop, retain the values of the pyroelectric effect and piezoelectric effect in the ferroelectric phase, as well as the bolometric effect in the paraelectric phase after repeated heating cycles to 400∘C and cooling to Tnorm. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2010-135X 2010-1368 2010135X |
| Relation: | https://doaj.org/toc/2010-135X; https://doaj.org/toc/2010-1368 |
| DOI: | 10.1142/S2010135X20600103 |
| URL الوصول: | https://doaj.org/article/ae86c1e42ee84705ac5c4fb0e071ce7a |
| رقم الانضمام: | edsdoj.86c1e42ee84705ac5c4fb0e071ce7a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 2010135X 20101368 |
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| DOI: | 10.1142/S2010135X20600103 |