Micro-sectoriality in hydrothermally grown ruby crystals: The internal structure of the boundaries of the growth sectors

Victor G. Thomas, Nina Daneu, Aleksander Rečnik, Rudolf I. Mashkovtsev, Goran Dražić, Sandra Drev, Sergey P. Demin, Pavel N. Gavryushkin, Dmitry A. Fursenko

Результат исследования: Научные публикации в периодических изданияхстатья

1 Цитирования (Scopus)

Аннотация

This study explores the fine structural details of the boundaries between the growth micro-sectors in a ruby crystal grown hydrothermally on a nonsingularly oriented (0112) seed. The samples were examined using IR-spectroscopy and HRTEM-analysis, demonstrating that the interfaces of the micro-sectors serve as 'traps' for OH-groups often observed in grown crystals. Counter to what has previously been reported, a significant proportion of these OH-groups is incorporated into ruby crystals in an orderly manner, forming diaspore-like layers growing epitaxially on the corundum (0112) lattice planes. The tensions on the boundaries between the micro-sectors result in local increase of internal pressure, making the diaspore-like phase stable. The assumption is made that the mechanism discussed in the article can explain the occurrence of OH-groups in the structure of nominally anhydrous minerals, such as MgSiO3 (akimotoite) which is structurally similar to corundum.

Язык оригиналаанглийский
Страницы (с-по)6594-6601
Число страниц8
ЖурналCrystEngComm
Том19
Номер выпуска44
DOI
СостояниеОпубликовано - 28 ноя 2017

Fingerprint Подробные сведения о темах исследования «Micro-sectoriality in hydrothermally grown ruby crystals: The internal structure of the boundaries of the growth sectors». Вместе они формируют уникальный семантический отпечаток (fingerprint).

  • Цитировать

    Thomas, V. G., Daneu, N., Rečnik, A., Mashkovtsev, R. I., Dražić, G., Drev, S., Demin, S. P., Gavryushkin, P. N., & Fursenko, D. A. (2017). Micro-sectoriality in hydrothermally grown ruby crystals: The internal structure of the boundaries of the growth sectors. CrystEngComm, 19(44), 6594-6601. https://doi.org/10.1039/c7ce01520h