Bulk moduli of SiO2 polymorphs: Quartz, coesite and stishovite
β Scribed by Lin-gun Liu
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 498 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0167-6636
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π SIMILAR VOLUMES
The high-pressure-phase of SiO 2 , coesite, was synthesized from Ξ±-quartz under high pressure using a multi-anvil apparatus, and the heat capacity was measured by adiabatic calorimetry between T = (13 and 300) K. The smoothed values of the heat capacity were obtained from the primary data, and the t
We present a covalent potential model of tetrahedrally coordinated SiO2. The interactions include covalent effects in the form of a Si-O bond-stretching potential, O -Si-O and Si -O -Si angle-bending potentials, and oxygen-oxygen repulsion. Calculated equations of state of c~quartz and coesite agree