Liu, C. and Ahrens, Thomas J. and Brar, N. S. (2000) Vitreous GeO2 response to shock loading. In: Shock compression of condensed matter--1999 : proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter held at Snowbird, Utah, June 27-July 2, 1999. American Institute of Physics Conference Proceedings. No.505. American Institute of Physics , Melville, NY, pp. 275-278. ISBN 1-56396-923-8. https://resolver.caltech.edu/CaltechAUTHORS:LIUaipcp00b
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Abstract
Shock wave profiles in vitreous GeO2 (6.56 Mg/m^3) under planar loading were measured using stress gauges to 14 GPa. New and previous data yield Hugoniot: D=0.974 (km/s)+1.711 u for shocks of 6 to 40 GPa. We show that the phase change from 4- to 6-fold coordination of Ge+4 with O–2 in vitreous GeO2 occurs from 4 to 15 GPa. Hugoniots of vitreous GeO2 and SiO2 are found to approximately coincide if the pressure in SiO2 is scaled by the ratio of SiO2 to GeO2 initial density.
| Item Type: | Book Section | ||||||
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| Additional Information: | © 2000 American Institute of Physics. This work was supported by Army Research Office and NASA. Contribution number 8663, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125. | ||||||
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| Subject Keywords: | glass transition; solid-state phase transformations; vitreous state; germanium compounds; oxygen compounds; equations of state; thermodynamics; shock wave effects; high-pressure effects; acoustic wave velocity measurement | ||||||
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| Series Name: | American Institute of Physics Conference Proceedings | ||||||
| Issue or Number: | 505 | ||||||
| Record Number: | CaltechAUTHORS:LIUaipcp00b | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:LIUaipcp00b | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 5914 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Archive Administrator | ||||||
| Deposited On: | 08 Nov 2006 | ||||||
| Last Modified: | 02 Oct 2019 23:27 |
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