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Structure of phases of the sillenite family in the Bi 2 O 3 -V 2 O 5 system

Structure of phases of the sillenite family in the Bi 2 O 3 -V 2 O 5 system Abstract X-ray diffraction studies of sillenite Bi24V2O40 single crystals grown by the hydrothermal method are performed for a separate crystal and powdered crystals. It is found that the composition of the two specimens is described by the (Bi24 − x ▭ x )[Bi 3+ y V 5+1−y ]2 O40 general formula with completely populated oxygen sites but differs in the content of vacancies at the bismuth site (this was established for the first time) and the Bi: V ratio at the tetrahedral site. The structural models of all the vanadium-containing sillenites reported in the literature are considered, and the possibility that Bi atoms are located at the centers of BiO4 tetrahedra is established. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crystallography Reports Springer Journals

Structure of phases of the sillenite family in the Bi 2 O 3 -V 2 O 5 system

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References (11)

Publisher
Springer Journals
Copyright
2011 Pleiades Publishing, Ltd.
ISSN
1063-7745
eISSN
1562-689X
DOI
10.1134/S1063774511010172
Publisher site
See Article on Publisher Site

Abstract

Abstract X-ray diffraction studies of sillenite Bi24V2O40 single crystals grown by the hydrothermal method are performed for a separate crystal and powdered crystals. It is found that the composition of the two specimens is described by the (Bi24 − x ▭ x )[Bi 3+ y V 5+1−y ]2 O40 general formula with completely populated oxygen sites but differs in the content of vacancies at the bismuth site (this was established for the first time) and the Bi: V ratio at the tetrahedral site. The structural models of all the vanadium-containing sillenites reported in the literature are considered, and the possibility that Bi atoms are located at the centers of BiO4 tetrahedra is established.

Journal

Crystallography ReportsSpringer Journals

Published: Mar 1, 2011

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