Transformations of the crystal structure in a series of rubidium boroleucite solid solutions from the x-ray powder diffraction data

M. G. Krzhizhanovskaya, R. S. Bubnova, S. K. Filatov, D. Meyer, P. Paufler

Результат исследований: Научные публикации в периодических изданияхстатья

7 Цитирования (Scopus)

Аннотация

The crystal structures of rubidium boroleucite RbBSi2O 6 [a = 12.785(1) Å] and two silicon-rich solid solutions Rb0.96(B0.77Si2.18)2.95O 6 [a = 12.858(1) Å] and Rb0.92(B 0.46Si2.42)2.88O6 [a = 12.914(1) Å] are refined in the space group I 4 3d (KBSi2O6 structural type) by the Rietveld method. Polycrystalline samples are prepared through the crystallization of glasses. The substitution Si4+ → B3+ in tetrahedra of the borosilicate framework occurs with the charge compensation due to a deficit of rubidium and boron. The formation of vacancies in tetrahedral positions leads to the breaking of bonds between tetrahedra, and bridging oxygen atoms become terminal atoms.

Язык оригиналаанглийский
Страницы (с-по)599-607
Число страниц9
ЖурналGlass Physics and Chemistry
Том29
Номер выпуска6
DOI
СостояниеОпубликовано - 1 ноя 2003

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Предметные области Scopus

  • Керамика и композитные материалы
  • Физика конденсатов
  • Химия материалов

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