Author:
Ruoff Arthur L.,Li Ting,Narayana Chandrabhas,Luo Huan,Greene Raymond G.
Abstract
ABSTRACTThe 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 withu= 0.0828 andw= 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.
Publisher
Springer Science and Business Media LLC
Reference20 articles.
1. Finite strain isotherm and velocities for single-crystal and polycrystalline NaCl at high pressures and 300°K
2. 19. Ruoff A.L. , Li T. , Pai M-F. , Luo H. , Greene R.G. , Narayana C. , Molstad J.C. , Trail S.S. , DiSalvo F.J. Jr , van Camp P.E. (unpublished).
3. The nature of the bonds in the iron silicide, FeSi, and related crystals
4. Production and metrology of 5 μm x‐ray apertures for 100 keV diffraction studies in the diamond anvil cell