Pressure-induced disordering in α-SrZrF6: Implications for the role of the countercation in glassy SrZrF6
- 1 May 1992
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 96 (9) , 6911-6916
- https://doi.org/10.1063/1.462584
Abstract
Reversible pressure‐induced changes in the Raman and x‐ray scattering of α‐SrZrF6 are reported. Above a pressure of ∼10.0 GPa there is a precipitous decline in the Raman intensity; this is a phenomenon associated with the formation of an amorphous state. Energy dispersive x‐ray diffraction (EDXD) measurements show that the amorphization is not complete—some residual ordering persists. The results suggest that glassy SrZrF6, prepared at ambient pressure, (1) contains kinked chains of ZrF8 dodecahedra and (2) the medium range order of the glass is determined by the way ZrF8 units are arranged around the strontium countercation.Keywords
This publication has 24 references indexed in Scilit:
- The pressure-induced disordering of ammonium metavanadateJournal of Physics: Condensed Matter, 1991
- Medium-range order in the cation distribution of a calcium silicate glassNature, 1991
- Pressure induced amorphization of AlPO4Pramana, 1990
- Static compression of Ca(OH)2 at room temperature: Observations of amorphization and equation of state measurements to 10.7 GPaGeophysical Research Letters, 1990
- Structural ordering in a calcium silicate glassNature, 1988
- High-pressure Raman study of the vibrational modes inand(α-quartz)Physical Review B, 1987
- Crystals at High PressureScientific American, 1985
- The pressure-induced metallic amorphous state of SnI4. II. Lattice vibrations at the crystal-to-amorphous phase transition studied by Raman scatteringJournal of Physics C: Solid State Physics, 1985
- Thermal Properties and Raman Spectra of Crystalline and Vitreous BaZrF6, PbZrF6, and SrZrF6Bulletin of the Chemical Society of Japan, 1983
- Pressure-induced structural changes in the system Ba1−xSrxRuO3Materials Research Bulletin, 1968