Published October 1, 2007
| Version v1
Journal article
Amorphous-amorphous transformation at high pressure in gallo-germanosilicate tetrahedral network glasses
- 1. Institut de Mineralogie et Physique des Milieux Condenses, Universite Paris 6, Universite Paris 7, CNRS UMR 7590, IPGP, 140 rue de Lourmel, 75015 Paris (France)
- 2. Synchrotron SOLEIL, L'Orme des Merisiers, Boite Postale 48, 91192 Gif s/Yvette Cedex (France)
- 3. European Synchrotron Radiation Facility, 6 rue Jules Horowitz, Boite Postale 220, 38043 Grenoble Cedex (France)
Description
We report the existence of structurally distinct amorphous states upon compression in sodium gallo-germanosilicate glasses. In situ x-ray absorption spectroscopy provides clear evidence for a transition at high pressure to a more compact arrangement of atoms based on Ga and Ge octahedral sites. This study extends previous works on simple and open tetrahedral networks (SiO2 and GeO2) by showing the compression behavior of stuffed (by Na cations) and mixed network glasses
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 76
- Journal Issue
- 13
- Journal Page Range
- p. 134204-134204.5
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39069559
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; AMORPHOUS STATE; CATIONS; COMPRESSION; GALLIUM; GERMANATES; GERMANIUM; GERMANIUM OXIDES; GLASS; PHASE TRANSFORMATIONS; PRESSURE RANGE MEGA PA 10-100; SILICA; SILICON OXIDES; SODIUM; SOLIDS; X-RAY SPECTRA; X-RAY SPECTROSCOPY
- Descriptors DEC
- ALKALI METALS; CHALCOGENIDES; CHARGED PARTICLES; ELEMENTS; GERMANIUM COMPOUNDS; IONS; METALS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PRESSURE RANGE; PRESSURE RANGE MEGA PA; SILICON COMPOUNDS; SPECTRA; SPECTROSCOPY
Optional Information
- Notes
- (c) 2007 The American Physical Society