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Structure of the metastable cubic B-1 phase of the La2Mo2O9 single crystalстатья
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: 18 июля 2013 г.
- Авторы: Alekseeva O.A., Sorokina N.I., Verin I.A., Voronkova V.I., Krasil'nikova A.E.
- Журнал: Crystallography Reports
- Том: 54
- Номер: 1
- Год издания: 2009
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 19
- Последняя страница: 24
- DOI: 10.1134/S1063774509010040
- Аннотация: The structure of the metastable B-1 phase of the La2Mo2O9 single crystal is investigated using X-ray diffraction. It is established that the crystal structure of the compound under investigation is described by the cubic unit cell with the parameter a = 7.158(5) A, which makes it possible to index approximately 84% of the reflections measured for this single crystal. The structure of the metastable cubic B-1 phase is characterized by a local lowering of the symmetry for the La and Mo atoms, which are displaced from their positions on the threefold axis, thus forming three sites around it with an occupancy of 0.333(2). The O(1) atom in the structure of the metastable cubic B-1 phase remains in the 4a position on the threefold axis but occupies it by only 86%. The O(2) and O(3) atoms located in a general position occupy their own sites with occupancies of 0.77(2) and 0.35(2), respectively. The final R factor of the refinement of this structural model is 2.52%.
- Добавил в систему: Воронкова Валентина Ивановна