Reversible phase transition in LiAlH4 under high pressure conditions.
2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, Vol. 70, no 18, 180101(R)- p.Article in journal (Refereed) Published
The structural stability of the hydrogen storage compound LiAlH4 was studied by Raman spectroscopy in the pressure interval 0–6 GPa. A slow phase transition from a-LiAlH4 to a b phase was observed to occur between 2.2 and 3.5 GPa. The phase transition is reversible and a reverse transformation to a-LiAlH4 was observed below 1.4 GPa. Analysis of Raman spectra from b-LiAlH4 shows that they cannot be explained by the theoretically predicted a-NaAlH4-type structure with I41 /a symmetry.
Place, publisher, year, edition, pages
2004. Vol. 70, no 18, 180101(R)- p.
LiAlH4, lithium alanate, hydride, hydrogen storage material, high pressure, Raman spectroscopy, phase transformation, lattice structure
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:umu:diva-9097DOI: doi:10.1103/PhysRevB.70.180101OAI: oai:DiVA.org:umu-9097DiVA: diva2:148768
Rapid Communication2008-02-292008-02-292010-01-19Bibliographically approved