Collected Item: “Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)”
Врста публикације
Рад у часопису
Верзија рада
објављена верзија
Језик рада
енглески
Аутор/и (Милан Марковић, Никола Николић)
Pavle Tančić, Aleksandar Kremenović, Predrag Vulić
Наслов рада (Наслов - поднаслов)
Structural dissymmetrization of optically anisotropic Grs<sub>64±1</sub>Adr<sub>36±1</sub>Sps<sub>2</sub>grandite from Meka Presedla (Kopaonik Mt., Serbia)
Наслов часописа
Powder Diffraction
Издавач (Београд : Просвета)
Cambridge University Press (CUP)
Година издавања
2019
Сажетак на енглеском језику
In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64
Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all of the presented results allows us to undoubtedly conclude that studied grandite is not cubic, neither as monophase nor as multiple phases in a mixture. Namely, it was established that structural dissymmetrization occurred and that it crystallized in the disordered rhombohedral R-3c or orthorhombic Fddd space groups, whereby the first one is more probable. Beside the established lower symmetry of the studied grandite, which could be treated as the primary cause, the residual strain is also not excluded as the second possible cause for its slight optical anisotropy.
Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all of the presented results allows us to undoubtedly conclude that studied grandite is not cubic, neither as monophase nor as multiple phases in a mixture. Namely, it was established that structural dissymmetrization occurred and that it crystallized in the disordered rhombohedral R-3c or orthorhombic Fddd space groups, whereby the first one is more probable. Beside the established lower symmetry of the studied grandite, which could be treated as the primary cause, the residual strain is also not excluded as the second possible cause for its slight optical anisotropy.
Волумен/том или годиште часописа
35
Број часописа
1
Почетна страна
7
Завршна страна
16
Укупан број страна рада (уколико не постоји пагинација)
10
DOI број
10.1017/S0885715619000897
ISSN број часописа
0885-7156
Кључне речи на српском (одвојене знаком ", ")
grandite, XRPD, crystal structure, structural dissymmetrization
Кључне речи на енглеском (одвојене знаком ", ")
grandite, XRPD, crystal structure, structural dissymmetrization
Линк
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0885715619000897
Шира категорија рада према правилнику МПНТ
M20
Ужа категорија рада према правилнику МПНТ
М23
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Затворени приступ
Лиценца
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Формат дигиталног објекта
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