Switching processes in alanine doped triglycine sulfate crystals
The paper presents the results of an experimental study of the dielectric and switching characteristics of some initial and annealed alanine-doped crystals of the triglycine sulfate group at room temperature. The results of measurements and calculations of the effective permittivity, switchable pola...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tver State University
2024-12-01
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| Series: | Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов |
| Subjects: | |
| Online Access: | https://physchemaspects.ru/2024/doi-10-26456-pcascnn-2024-16-072/?lang=en |
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| Summary: | The paper presents the results of an experimental study of the dielectric and switching characteristics of some initial and annealed alanine-doped crystals of the triglycine sulfate group at room temperature. The results of measurements and calculations of the effective permittivity, switchable polarization, coercive and bias fields, unipolarity coefficient and dielectric loss tangent are presented. It was found that for most samples before and after annealing, the dielectric hysteresis loops are unipolar and shifted along the abscissa axis. This indicates a preferential orientation of domains and the presence of bias fields. As a result of annealing, the values of the coercive field and the unipolarity coefficient of the crystals decrease, and the switchable polarization increases. It is shown that the field dependences of the effective permittivity of the crystals before annealing have extrema lying in the field range of (5-7,5) ∙ 104 V∙m-1 and in the range (5-12) ∙ 104 V∙m-1 after their annealing. |
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| ISSN: | 2226-4442 2658-4360 |