| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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High Pressure X-Ray Diffraction Study of a Grossular–Andradite Solid Solution and the Bulk Modulus Variation along this Solid Solution |
| FAN Da-Wei1**, WEI Shu-Yi1,3, LIU Jing2, LI Yan-Chun2, XIE Hong-Sen1
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1 Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002
2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
3 Graduate University of the Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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FAN Da-Wei, WEI Shu-Yi, LIU Jing et al 2011 Chin. Phys. Lett. 28 076101 |
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Abstract In-situ angle-dispersive x-ray diffraction measurements on three samples of Gr14An84, Gr34An64 and Gr63An34 were performed by using a diamond anvil cell instrument with synchrotron radiation at the Beijing Synchrotron Radiation Facility at up to 13.7 GPa. A least−square fit of the pressure-volume to the Birch–Murnaghan equation of state, when fixed K'0=4.0 yields bulk modulus values of K0=166±2, 168±3, 173±2 GPa for Gr14An84, Gr34An64 and Gr63An34, respectively. The bulk modulus increases from 166±2 GPa for Gr14An84 and to 173±2 GPa for Gr63An34 with the increasing An content. Furthermore, by linear interpolation, the bulk modulus of the Gr−An binary system as a function of An content can be expressed as K0(GPa) =176.9(9)−0.12(1)XAn (R2=0.987).
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| Keywords:
61.05.Cp
64.30.Jk
07.35.+k
91.60.Gf
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Received: 17 February 2011
Published: 29 June 2011
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| PACS: |
61.05.cp
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(X-ray diffraction)
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64.30.Jk
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(Equations of state of nonmetals)
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07.35.+k
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(High-pressure apparatus; shock tubes; diamond anvil cells)
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91.60.Gf
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(High-pressure behavior)
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