|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Octahedra-Tilted Control of Displacement Disorder and Dielectric Relaxation in Mn-Doped SrTiO$\less$sub$\greater$3$\less$/sub$\greater$ Single Crystalsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Talanov Mikhail V., Stash Adam I., Ivanov Sergey A., Zhukova Elena S., Gorshunov Boris P., Nekrasov Boris M., Stolyarov Vasily S., Kozlov Vladislav I., Savinov Maxim, Bush Alexander A.
- Журнал: Journal of Physical Chemistry Letters
- Год издания: 2022
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 11720
- Последняя страница: 11728
- DOI: 10.1021/acs.jpclett.2c03513
- Аннотация: Strontium titanate SrTiO3 (STO) is a canonical example of a quantum paraelectric, and its doping with manganese ions unlocks its potential as a quantum multiferroic candidate. However, to date, the specifics of incorporation of the manganese ion into the perovskite lattice and its impact on structure−property relationships are debatable questions. Herein, using high-precision X-ray diffraction of a Mn (2 atom %)-doped STO single crystal, clear fingerprints of the displacement disorder of Mn cations in the perovskite B-sublattice are observed. Moreover, near the temperature of the antiferrodistortive transition, the off-center Mn position splits in two, providing the unequal potential barrier’s distribution for possible local atomic hopping. A link with this was found via analysis of the dielectric response that reveals two Arrhenius-type relaxation processes with similar activation energies (35 and 43 meV) and attempt frequencies (1×10^11 and ∼1.6×10^10 Hz), suggesting similar dielectric relaxation mechanisms.
- Добавил в систему: Сташ Адам Игаркович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | J._Phys._Chem._Lett._2022_13_SrTiMnO3.pdf | 4,1 МБ | 16 декабря 2022 [adam_stash] | |
| 2. | Экспертное заключение | ekspertnoe_zaklyuchenie_JPhysChemLett_2022.pdf | 621,4 КБ | 19 декабря 2022 [adam_stash] |