|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Thermally tunable dielectric performance of t-ZrO2 stabilized amorphous Si(Pb,Zr)OC ceramic nanocompositesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
- Авторы: Thiyagarajan Ganesh Babu, Koroleva Ekaterina, Filimonov Alexey, Vakhrushev Sergey, Kumar Ravi
- Журнал: Materials Chemistry and Physics
- Том: 277
- Год издания: 2022
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 125495
- DOI: 10.1016/j.matchemphys.2021.125495
- Аннотация: The study reports in-situ nanocrystallization of Pb stabilized t-ZrO2 in anamorphous Si(Pb,Zr)OC matrix (PZSiOC) derived from lead zirconate modifiedpoly(hydridomethylsiloxane) with thermally tunable dielectric behavior. The stabilizationof t-ZrO2 phase in the amorphous silicon oxycarbide (SiOC) matrix is ascribed to the criticalcrystallite size effect and incorporation of Pb ion into the t-ZrO2 lattice. The dielectricbehavior as a function of temperature (-50 °C to 300 °C) and frequency (100 Hz to 10 MHz)is comprehensively investigated. It is observed that these ceramic nanocomposites exhibithigh permittivity and low loss in contrast to SiOC at all measured temperatures and reachedcolossal values (ε’> 104) above critical temperature with an S-shaped frequency dependentdielectric loss. Thermally activated interfacial-charge polarization process can be reasonedout for this interesting behavior. The study paves the way for the attainment of costeffective,tailored as well as highly functional PZSiOC ceramic nanocomposites withcolossal permittivity for a wide array of applications. The dielectric permittivity resultsexemplify the huge potential of PZSiOC ceramic nanocomposites in energy storage devices.Studies are in progress to assess the suitability of PZSiOC ceramic nanocomposites insupercapacitors.
- Добавил в систему: Филимонов Алексей Владимирович