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New double holmium borates: Rb3HoB6O12 and Rb3Ho2B3O9статья
- Авторы: Subanakov A.K., Kovtunets E.V., Bazarov B.G., Dorzhieva S.G., Bazarova J.G.
- Журнал: Solid State Sciences
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 106231
- DOI: 10.1016/j.solidstatesciences.2020.106231
- Аннотация: Double borates Rb3HoB6O12, Rb3Ho2B3O9 were newly synthesized by the sol–gel method and with solid state reactions. The crystal structures were determined from powder X-ray diffraction data. Rietveld's refinement of Rb3HoB6O12 showed the following: R32, a = 13.4078 (2) Å, c = 30.3398 (4) Å, Z = 15. Rb3Ho2B3O9 species revealed: Pna21, a = 8.7139 (1) Å, b = 9.5760 (2) Å, c = 12.22335 (1) Å, Z = 2. Rb3HoB6O12 and Rb3Ho2B3O9 incongruently and congruently melted at 818 °C and 908 °C, respectively. The phase transition for Rb3HoB6O12 was established at 715 °C. The existence of B5O10 group in Rb3HoB6O12 crystal structure was confirmed by an IR analysis.
- Добавил в систему: Чебышев Константин Александрович