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The Effect of Electric Aging on Vinylidene Fluoride Copolymers for Ferroelectric Memoryстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 12 июня 2024 г.
- Авторы: Kochervinskii Valentin V., Buryanskaya Evgeniya L., Osipkov Aleksey S., Makeev Mstislav O., Kiselev Dmitry A., Gradova Margarita A., Gradov Oleg V., Lokshin Boris V., Korlyukov Alexandr A.
- Журнал: Nanomaterials
- Том: 14
- Номер: 12
- Год издания: 2024
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 1002
- Последняя страница: 1002
- DOI: 10.3390/nano14121002
- Аннотация: Copolymers based on vinylidene fluoride are potential materials for ferroelectric memoryelements. The trend in studies showing that a decrease in the degree of crystallinity can lead toan unexpected increase in the electric breakdown field is noted. An analysis of the literature datareveals that in fluorine-containing ferroelectric polymers, when using a bipolar triangular field, thehysteresis loop has an unclosed shape, with each subsequent loop being accompanied by a decreasein the dielectric response. In this work, the effect of the structure of self-polarized films of copolymersof vinylidene fluoride with tetrafluoroethylene and hexafluoropropylene on breakdown processeswas studied. The structure of the polymer films was monitored using infrared spectroscopy (IR)and X-ray diffraction. Kelvin probe force microscopy (KPFM) was applied to characterize the localelectrical properties of the polymers. For the films of the first copolymer, which crystallize in the polarβ-phase, asymmetry in the dielectric response was observed at fields greater than the coercive field.For the films of the copolymers of vinylidene fluoride with hexafluoropropylene, which crystallizepredominantly in the nonpolar α-phase, polarization switching processes have also been observed,but at lower electric fields. The noted phenomena will help to identify the influence of the structureof ferroelectric polymers on their electrical properties.Keywords: polymers; ferroelectric materials;
- Добавил в систему: Локшин Борис Вениаминович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | nanomaterials-14-01002_6.pdf | nanomaterials-14-01002_6.pdf | 3,6 МБ | 11 июня 2024 [bloksh] | |
| 2. | ekspertnoe_zaklyuchenie_001.jpg | ekspertnoe_zaklyuchenie_001.jpg | 161,9 КБ | 11 июня 2024 [bloksh] |