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The role of Tb-doping on the structural and functional properties of Bi4-xTbxTi3O12 ferroelectric phases with the Aurivillius type structureстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
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: 19 февраля 2020 г.
- Авторы: Sarkar Tapati, Ivanov Sergey A., Fortalnova Elena A., Politova Ekaterina D., Safronenko Marina G., Nordblad Per, Mathieu Roland
- Журнал: Journal of Materials Science
- Том: 28
- Номер: 6
- Год издания: 2016
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 4914
- Последняя страница: 4924
- DOI: 10.1007/s10854-016-6140-7
- Аннотация: Synthesis, crystal structure, dielectric, and magnetic properties of the Aurivillius phase Bi4-xTbxTi3- O12 (x = 0.0, 0.4, 0.6, 0.8) are reported. The samples were synthesized using standard solid state reaction technique. The thermal stability of the obtained solid solutions was investigated. For x B 0.8, the samples crystallized in an orthorhombic symmetry. All the samples showed finite second harmonic generation response indicating a noncentrosymmetric structure. The structural data could be refined using the polar orthorhombic space group B2cb. The orthorhombicity decreases with an increase in the Tb3? concentration. The orthorhombic distortions in these compositions are related to the Bi3?-based perovskite sublattice. Our results indicate that the non-lone pair Tb3? cations preferentially occupy the perovskite sublattice initially, but with an increase in the doping concentration they can partially substitute the Bi3? ions in the fluorite block. Temperature dependent dielectric measurements revealed a decrease in the ferroelectric Curie temperature TC with an increase in x from TC = 904 K (for x = 0) to 877 K (for x = 0.4). Further increase in x led to a cross-over to a relaxor-type behavior. Magnetic measurements showed that the samples are paramagnetic down to 5 K.
- Добавил в систему: Иванов Сергей Александрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | BiTbTiO.pdf | 2,2 МБ | 12 февраля 2020 [Sergey_Alexandrovich_Ivanov] |