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Elasticity of MgO and a primary pressure scale to 55 GPa
Open accessAbstract
We have studied the elasticity and pressure–density equation of state of MgO in diamond cells to 55 GPa and have doubled the previous pressure limit of accurate elasticity determinations for crystals. Integrating single-crystal velocity data from Brillouin scattering measurements and density data from polycrystalline x-ray diffraction, we obtained the three principal elastic tensor elements ( C 11 , C 12 , and C 44 ) and various secondary elasticity parameters, including single-crystal elastic anisotropy, Cauchy relation, aggregate sound velocities, and Poisson's ratio, as functions of pressure. The present study also provides a direct determination of pressure without recourse to any prior pressure standard, thus creating a primary pressure scale. The commonly used ruby fluorescence pressure scale has thus been improved to 1% accuracy by the new MgO scale.
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Citations
Cited by
The General Utility Lattice Program ( GULP )
Gale, J. D., & Rohl, A. L. (2003) · Molecular Simulation · doi:10.1080/0892702031000104887 · Cited by 2,265
Properties of diamond under hydrostatic pressures up to 140 GPa
Occelli, F., Loubeyre, P., & LeToullec, R. (2003) · Nature Materials · doi:10.1038/nmat831 · Cited by 502
Fei, Y., Van Orman, J., Li, J., van Westrenen, W., Sanloup, C., Minarik, W., Hirose, K., Komabayashi, T., Walter, M., & Funakoshi, K. (2004) · Journal of Geophysical Research: Solid Earth · doi:10.1029/2003jb002562 · Cited by 462
The ruby pressure standard to 150GPa
Chijioke, A. D., Nellis, W. J., Soldatov, A., & Silvera, I. F. (2005) · Journal of Applied Physics · doi:10.1063/1.2135877 · Cited by 286
Metadata
- Authors
- Zha, C.-S., Mao, H.-K., & Hemley, R. J.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2000-11-28
- Volume
- 97
- Issue
- 25
- Pages
- 13494-13499
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1973657559
- Cited by
- 467
- References
- 0
- FWCI
- 10.63
- Type
- journal article
- Language
- en
- Open access
- green
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- Zha, C.-S., Mao, H.-K., & Hemley, R. J. (2000). Elasticity of MgO and a primary pressure scale to 55 GPa. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.240466697
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