| Инд. авторы: | Ovsyuk N.N., Goryainov S.V., Likhacheva A.Y. |
| Заглавие: | Raman scattering of impact diamonds |
| Библ. ссылка: | Ovsyuk N.N., Goryainov S.V., Likhacheva A.Y. Raman scattering of impact diamonds // Diamond and Related Materials. - 2019. - Vol.91. - P.207-212. - ISSN 0925-9635. - EISSN 1879-0062. |
| Внешние системы: | DOI: 10.1016/j.diamond.2018.11.017; РИНЦ: 38612494; SCOPUS: 2-s2.0-85057378632; WoS: 000457660500025; |
| Реферат: | eng: We report the results of a study of the polycrystalline powder of the diamond-lonsdaleite from the Popigai crater (Siberia) using UV micro-Raman spectroscopy and high-resolution synchrotron X-ray diffraction. By subtracting two experimental Raman spectra of diamond-lonsdaleite samples with close amounts of diamond and lonsdaleite, we were able to identify the polytypic composition of impact diamonds in contrast to the method of X-ray diffraction. We have managed to get for the first time the spectrum of "pure" lonsdaleite. Its deconvolution has allowed us to identify all the three Raman- active vibrational modes E-2g, A(1g), and E-1g whose positions agree well with the results of ab Mitio calculations.
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| Ключевые слова: | PRESSURE; TEMPERATURE; LONSDALEITE; |
| Издано: | 2019 |
| Физ. характеристика: | с.207-212 |