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- Sundqvist, Bertil, et al.
(författare)
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Complex hydrides studied by Raman spectroscopy and thermal conductivity measurements under high pressure
- 2006
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Ingår i: Hydrogen Storage Technologies. - Warrendale : Materials Research Society. ; , s. 7-12
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Konferensbidrag (refereegranskat)abstract
- The pressure-temperature phase diagrams of alkali metal alanates and borohydrides are of large current interest, and we have recently studied phase transformations under pressure in several of these materials. We here report Raman studies of KBH4 under pressure at room temperature, showing a phase transition near 6 GPa. Although no structural information is yet available, the similarity between KBH4 and NaBH4 suggests the new structure is orthorhombic. We also report studies on LiBH4 showing that the high pressure phase of this material is metastable to zero pressure below 200 K.
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