Ruoff, Arthur L. ; Li, Ting ; Narayana, Chandrabhas ; Luo, Huan ; Greene, Raymond G. (1997) Novel structure of MgSe in the multimegabar regime: positional parameter determination MRS Proceedings, 499 . No pp. given. ISSN 1946-4274
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Official URL: https://www.cambridge.org/core/journals/mrs-online...
Related URL: http://dx.doi.org/10.1557/PROC-499-429
Abstract
The structural transformations in the II-VI compound MgSe have been studied under pressure using energy dispersive X-ray diffraction. MgSe transforms ‘continuously’ from the rocksalt (Bl) structure to a FeSi (B28) or Au-Be structure beginning at 99 ± 8 GPa. At 202 GPa, MgSe is approaching 7-fold coordination with u = 0.0828 and w = 0.4173. The method for intensity calculation of the diffraction peaks is presented. Using the Birch equation, the equation of state to 146 GPa was determined with Bo = 62.8 + 1.6 GPa and Bo′ = 4.1.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Cambridge University Press. |
| ID Code: | 113748 |
| Deposited On: | 30 Apr 2018 11:55 |
| Last Modified: | 30 Apr 2018 11:55 |
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