High-pressure phase transition in LiBH4

✍ Scribed by A.V. Talyzin; O. Andersson; B. Sundqvist; A. Kurnosov; L. Dubrovinsky

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 388 KB
• Volume: 180
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2006.10.032

✦ Synopsis

The high-pressure phase transition from ambient pressure a-LiBH 4 to high-pressure b-LiBH 4 was observed by Raman spectroscopy and X-ray diffraction between 0.8 and 1.1 GPa. The phase boundary between these two phases was mapped over a large range of temperatures using thermal conductivity studies and differential thermal analysis. The structure of the high-pressure phase could not be identified due to small number of experimentally observed reflections, but it was shown that it is different from previously reported theoretical predictions.