|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Shift of CO2-I absorption bands in diamond: A pressure or compositional effect? A FTIR mapping studyстатья
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: 3 ноября 2021 г.
- Авторы: Barannik Evgenii P., Shiryaev Andrey A., Hainschwang Thomas
- Журнал: Diamond and Related Materials
- Том: 113
- Год издания: 2021
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 108280
- DOI: 10.1016/j.diamond.2021.108280
- Аннотация: Infra-red maps and profiles with high spatial resolution were obtained for two single crystal diamonds with pronounced CO2 IR absorption peaks. Detailed examination allows unambiguous assignment of the spectral features to solid CO2-I phase. It is shown that the distribution of IR band positions, intensities and widths in the sample follows regular patterns and is not chaotic as was suggested in previous works where spectra of a few individual spots were analysed. Consequently, pressure effects alone fail to explain all observed features and shifts of the CO2 bands. Experimental data can be explained by presence of impurities (such as water, N2, etc.) in the trapped CO2. This implies that spectroscopic barometry of CO2 microinclusions in diamond may be subject to poorly controlled bias. However, barometry is still possible if Davydov splitting of the CO2-I ν2 band is unequivocally observed, as this indicates high purity of the CO2 ice.
- Добавил в систему: Ширяев Андрей Альбертович