|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
EVOLUTION OF THE CRYSTAL STRUCTURE AND THE DIELECTRIC PROPERTIES OF (Pb0.86Sr0.14)5Ge3O11 SINGLE CRYSTALS UNDER HIGH-ENERGY ELECTRON IRRADIATIONстатья
- Авторы: Stash A.I., Ivanov S.A., Bush A.A., Kozlov V.I., Boyko V.M.
- Журнал: Journal of Structural Chemistry
- Том: 64
- Номер: 6
- Год издания: 2023
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1081
- Последняя страница: 1097
- DOI: 10.1134/S0022476623060112
- Аннотация: Single crystals of (Pb0.86Sr0.14)5Ge3O11 are prepared by a slow melt cooling. The effect of high-energy electron irradiation with fluences up to 6.2⋅1018 e/cm2 on the structural and dielectric properties of these crystals is studied; the dependence of crystal structure parameters on the fluences is considered; the structural mechanism of selective substitution of Pb by Sr is established. It is determined that the sites occupied by lead with a lone pair are not substituted by strontium cations. Up to the fluences of 6.2⋅1018 e/cm2, the (Pb0.86Sr0.14)5Ge3O11 structure remains perfect. It is shown that the irradiation with these fluences preserves the paraelectric structure at 293 K (P6 space group) and causes only minor atomic displacements. The temperature dependences of the dielectric permittivity and the dielectric loss (in the ranges of 5-300 K and 1-1000 kHz) show that the irradiation shifts TC from 158 K to 145 K and increases the diffusion of the ferroelectric phase transition.
- Добавил в систему: Сташ Адам Игаркович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Journal_of_Structural_Chemistry_2023_64_6_1081-1097_PbSrGeO… | 1,8 МБ | 30 июня 2023 [adam_stash] | |
| 2. | Экспертное заключение | Zkspertnoe_zaklyuchenie_ZhSH_PSGO_2023.pdf | 634,1 КБ | 30 июня 2023 [adam_stash] |