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Stability of the crystal structure of L‐valine under high pressure
Author(s) -
da Silva J. Hermínio,
Lemos V.,
Freire P. T. C.,
Melo F. E. A.,
Filho J. Mendes,
Lima J. A.,
Pizani P. S.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200880523
Subject(s) - classification of discontinuities , raman spectroscopy , raman scattering , crystal (programming language) , crystal structure , chemistry , valine , ambient pressure , crystallography , materials science , thermodynamics , optics , physics , amino acid , mathematics , mathematical analysis , biochemistry , computer science , programming language
Raman scattering measurements were carried out on a single crystal of L‐valine with the pressure increasing from the ambient value to 6.9 GPa. Sudden changes in intensity of the bands were observed in the higher energy spectral range at ∼3 GPa and ∼5.3 GPa. Discontinuities observed in the wave number vs. pressure plots occurred in the complete spectrum at those same pressures, suggesting changes in the crystal structure. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)