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English

Low-lying phonons in NaBH4 as seen with inelastic scattering of synchrotron radiation

Published inPhysical review. B, Condensed matter and materials physics, vol. 78, no. 6-7, 172104
Publication date2008
Abstract

Acoustic phonon dispersion has been measured in the cubic phase of NaBH4 by the inelastic x-ray scattering (IXS) technique using single crystals of natural isotope composition at room temperature. Experimental results are compared with the compressibility data and the previously published ab initio calculations. Comparison of the elastic properties derived from the diffraction and IXS experiments indicates a non-negligible contribution (below 10%) of nonhydrostatic effects in the diffraction experiments. Strong preferred orientation in the compressed samples is also revealed by Rietveld analysis of the synchrotron powder-diffraction data.

Keywords
  • Hydrides
  • Phonons
  • Inelastic X-ray scattering
  • Elasticity
Research group
Citation (ISO format)
CHERNYSHOV, D. et al. Low-lying phonons in NaBH4 as seen with inelastic scattering of synchrotron radiation. In: Physical review. B, Condensed matter and materials physics, 2008, vol. 78, n° 6-7, p. 172104. doi: 10.1103/PhysRevB.78.172104
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Identifiers
ISSN of the journal1098-0121
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