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Type: Artigo de periódico
Title: Pressure-induced Phase Transitions In Kliso4
Author: Melo F.E.A.
Lemos V.
Cerdeira F.
Filho J.M.
Abstract: The room-temperature Raman spectrum of KLiSO4 was studied as a function of pressure up to 100 kbar. We discuss the evolution of the portion of the spectrum (>600 cm-1) containing the vibrational modes of the SO4 2 ions, as a function of steadily increasing or steadily decreasing pressure. We identify three distinct phase transitions which show a high degree of hysteresis. In one of the phases ( phase) the Raman spectrum undergoes qualitative changes in a continuous manner as pressure increases. This behavior, which is not shown by any of the other observed phases, may be an indication that the phase is incommensurate. © 1987 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.35.3633
Date Issue: 1987
Appears in Collections:Unicamp - Artigos e Outros Documentos

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