Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Micro-sectoriality in hydrothermally grown ruby crystals : The internal structure of the boundaries of the growth sectors. / Thomas, Victor G.; Daneu, Nina; Rečnik, Aleksander и др.
в: CrystEngComm, Том 19, № 44, 28.11.2017, стр. 6594-6601.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Micro-sectoriality in hydrothermally grown ruby crystals
T2 - The internal structure of the boundaries of the growth sectors
AU - Thomas, Victor G.
AU - Daneu, Nina
AU - Rečnik, Aleksander
AU - Mashkovtsev, Rudolf I.
AU - Dražić, Goran
AU - Drev, Sandra
AU - Demin, Sergey P.
AU - Gavryushkin, Pavel N.
AU - Fursenko, Dmitry A.
N1 - Publisher Copyright: © 2017 The Royal Society of Chemistry.
PY - 2017/11/28
Y1 - 2017/11/28
N2 - 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.
AB - 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.
KW - ELECTRON-DENSITY
KW - CORUNDUM
KW - RUTILE
KW - SPECTROSCOPY
KW - ALPHA-AL2O3
KW - SAPPHIRE
KW - DIASPORE
KW - HYDROGEN
KW - FACES
KW - BERYL
UR - http://www.scopus.com/inward/record.url?scp=85034256771&partnerID=8YFLogxK
U2 - 10.1039/c7ce01520h
DO - 10.1039/c7ce01520h
M3 - Article
AN - SCOPUS:85034256771
VL - 19
SP - 6594
EP - 6601
JO - CrystEngComm
JF - CrystEngComm
SN - 1466-8033
IS - 44
ER -
ID: 9697126