High-pressure phase of NaB H4: Crystal structure from synchrotron powder diffraction data
(2007) Physical Review B - Condensed Matter and Materials Physics — Vol. 76, n° 9, p. 1-4 (2007)
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- Abstract
- The ambient pressure fcc phase of NaB H4 transforms into a tetragonal P- 421 c near 6 GPa and then into an orthorhombic Pnma phase above 8 GPa. While the structures of the cubic and tetragonal phases are known, the structural information for the orthorhombic phase was limited to the space group and cell parameters. Here, we present synchrotron powder diffraction data for NaB H4 collected in a diamond anvil cell up to 11.2 GPa. A BaS O4 -type structure of the orthorhombic high-pressure phase was solved ab initio from diffraction data and refined by the Rietveld method. Both tetragonal and orthorhombic phases show pronounced preferred orientation of crystallites with respect to the compression direction. © 2007 The American Physical Society.
- Affiliations
ESRF, Grenoble (France) Chimie
Citations
Filinchuk, Y., Talyzin, A. V., Chernyshov, D., & Dmitriev, V. (2007). High-pressure phase of NaB H4: Crystal structure from synchrotron powder diffraction data. Physical Review B - Condensed Matter and Materials Physics, 76(9), 1-4. https://doi.org/10.1103/PhysRevB.76.092104 (Original work published 2007)