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Title

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

Authors
Chernyshov, D.
Bosak, A.
Dmitriev, V.
Published in Physical Review. B, Condensed Matter. 2008, vol. 78, no. 6-7, p. 172104
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 HydridesPhononsInelastic X-ray scatteringElasticity
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Research group Groupe Hagemann
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CHERNYSHOV, D. et al. Low-lying phonons in NaBH4 as seen with inelastic scattering of synchrotron radiation. In: Physical Review. B, Condensed Matter, 2008, vol. 78, n° 6-7, p. 172104. https://archive-ouverte.unige.ch/unige:3562

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Deposited on : 2009-10-02

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