Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.1134/S1063783420110190
Ключевые слова: crystal structure, huntites, phase transition, structural stability, tolerance factor
Аннотация: Abstract: 85 RM3(BO3)4 (R is the rare-earth element (Y, La–Lu) and M = Al, Sc, Cr, Fe, or Ga) compounds with the huntite structure have been analyzed. The analysis of the structures has made it possible to determine critical atomic displacements during the phase transition R32 ↔ P3121 and establish how these critical displacements can be controlled by varying the ionic radii. A tolerance factor has been derived and its threshold value below which the structure is stable in the R32 phase and above it, in the distorted P3121 phase, has been found. The formula has been tested on more than 30 huntite-family compounds and good agreement has been obtained. Therefore, it can be used with confidence to predict new compounds. At the moment, the tolerance factor has allowed us to establish previously unknown regularities in huntites. © 2020, Pleiades Publishing, Ltd.
Издание
Журнал: Physics of the Solid State
Выпуск журнала: Vol. 62, Is. 11
Номера страниц: 2058-2062
ISSN журнала: 10637834
Издатель: Pleiades journals
Персоны
- Molokeev M.S. (Siberian Fed Univ, Krasnoyarsk 660041, Russia; Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
- Kuznetsov S.O. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
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