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|Type:||Artigo de periódico|
|Title:||High-pressure Phase Transitions In Li2so4|
|Abstract:||Raman spectroscopy of Li2SO4 was performed for pressures in the range 1 bar to 80 kbar. The crystal remains in the original phase if the pressure is kept below 13 kbar. At this pressure the spectrum undergoes qualitative changes in a continuous way as a function of time, up to about eight hours. This was interpreted as a dynamical transition to a new structure, called the phase. Substantial modifications in the spectra were also observed to occur when the pressure exceeded 35 kbar. Above this value the results suggest another high-pressure phase with a noncentrosymmetric space group. © 1990 The American Physical Society.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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