Pressure-Induced Structural Transformation in Radiation-Amorphized Zircon
Abstract
We study the response of a radiation-amorphized material to high pressure. We have used zircon ZrSiO{sub 4} amorphized by natural radiation over geologic times, and have measured its volume under high pressure, using the precise strain-gauge technique. On pressure increase, we observe apparent softening of the material, starting from 4 GPa. Using molecular dynamics simulation, we associate this softening with the amorphous-amorphous transformation accompanied by the increase of local coordination numbers. We observe permanent densification of the quenched sample and a nontrivial 'pressure window' at high temperature. These features point to a new class of amorphous materials that show a response to pressure which is distinctly different from that of crystals.
- Authors:
-
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ (United Kingdom)
- Institute for High Pressure Physics, Troitsk 142190 (Russian Federation)
- Publication Date:
- OSTI Identifier:
- 20951192
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 13; Other Information: DOI: 10.1103/PhysRevLett.98.135502; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; MOLECULAR DYNAMICS METHOD; NATURAL RADIOACTIVITY; PHASE TRANSFORMATIONS; PRESSURE RANGE GIGA PA; STRAIN GAGES; ZIRCON; ZIRCONIUM SILICATES
Citation Formats
Trachenko, Kostya, Dove, Martin T, Salje, E K. H., Brazhkin, V V, and Tsiok, O B. Pressure-Induced Structural Transformation in Radiation-Amorphized Zircon. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVLETT.98.135502.
Trachenko, Kostya, Dove, Martin T, Salje, E K. H., Brazhkin, V V, & Tsiok, O B. Pressure-Induced Structural Transformation in Radiation-Amorphized Zircon. United States. https://doi.org/10.1103/PHYSREVLETT.98.135502
Trachenko, Kostya, Dove, Martin T, Salje, E K. H., Brazhkin, V V, and Tsiok, O B. 2007.
"Pressure-Induced Structural Transformation in Radiation-Amorphized Zircon". United States. https://doi.org/10.1103/PHYSREVLETT.98.135502.
@article{osti_20951192,
title = {Pressure-Induced Structural Transformation in Radiation-Amorphized Zircon},
author = {Trachenko, Kostya and Dove, Martin T and Salje, E K. H. and Brazhkin, V V and Tsiok, O B},
abstractNote = {We study the response of a radiation-amorphized material to high pressure. We have used zircon ZrSiO{sub 4} amorphized by natural radiation over geologic times, and have measured its volume under high pressure, using the precise strain-gauge technique. On pressure increase, we observe apparent softening of the material, starting from 4 GPa. Using molecular dynamics simulation, we associate this softening with the amorphous-amorphous transformation accompanied by the increase of local coordination numbers. We observe permanent densification of the quenched sample and a nontrivial 'pressure window' at high temperature. These features point to a new class of amorphous materials that show a response to pressure which is distinctly different from that of crystals.},
doi = {10.1103/PHYSREVLETT.98.135502},
url = {https://www.osti.gov/biblio/20951192},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 13,
volume = 98,
place = {United States},
year = {Fri Mar 30 00:00:00 EDT 2007},
month = {Fri Mar 30 00:00:00 EDT 2007}
}