The structure of quartz at 25 and 590°C determined by neutron diffraction
Abstract
Analysis of single-crystal data on the α to β transformation in quartz, which takes place at 573°C, showed that the model which, till now, has best agreed with available X-ray data, does not hold for the neutron data. In an earlier model both oxygen and silicon atoms move to special positions (6 j and 3 c in the space group P6 222). The new data for β-quartz were best explained by assuming a disorder for the oxygen atom around the 6 j position, and in order to keep regular SiO 4 tetrahedra, a corresponding small disorder in the silicon atom is assumed.
- Publication:
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Journal of Solid State Chemistry France
- Pub Date:
- March 1981
- DOI:
- 10.1016/0022-4596(81)90449-7
- Bibcode:
- 1981JSSCh..36..371W