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Crystal Structures of α-Quartz Homeotypes Boron Phosphate and Boron Arsenate: Structure-property Relationships by Fertey, Pierre; Chateau, Christian; Haines, Julien; Cambon, Olivier; Astier, René is a Chemistry article available to read on EtoBox.

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## Abstract The structures of single crystals of the__α__-quartz homeotypes boron phosphate and boron arsenate prepared under high-pressure, high-temperature conditions in a belt-type apparatus were determined by X-ray diffraction. Both structures are more distorted with respect to the__β__-quartz structure type than__α__-quartz itself with average tetrahedral tilt angles__δ__of 19.7° and 24.6° for BPO~4~and BAsO~4~, respectively. The structure of BAsO~4~is one of the most highly distorted found among__α__-quartz homeotypes. It is shown that for the known__α__-quartz homeotypes, the density, which can be related to the frequency constant for piezoelectric resonators, scales with the intertetrahedral bridging angle__θ__.

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Author

Fertey, Pierre; Chateau, Christian; Haines, Julien; Cambon, Olivier; Astier, René

Publisher

Oldenbourg Wissenschaftsverlag; Walter de Gruyter GmbH (ISSN 2194-4946)

Published

2004

Language

EN

Field

Chemistry (Physical Sciences)