High-temperature phase transitions and elasticity of silica polymorphs
β Scribed by Dmitry L. Lakshtanov; Stanislav V. Sinogeikin; Jay D. Bass
- Publisher
- Springer-Verlag
- Year
- 2006
- Tongue
- English
- Weight
- 403 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0342-1791
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This work presents a comprehensive study on phase transitions in LiAlO 2 system at high pressures and temperatures (0.5-5.0 GPa and 300-1873 K, respectively), as well as the phase stability for polymeric phases of LiAlO 2 in the studied P-T space by X-ray diffraction (XRD). Besides the previously de
## Abstract Modulated differential scanning calorimetry (MDSC), thermogravimetric analysis (TGA) and Xβray diffraction (XRD) were used to study the phase behaviour of NH~4~HSO~4~ (AHS) above room temperature. For powder AHS measured during successive thermal cycles, the MDSC curves show an endother