Title of article
Pressure-induced phase transformations in l-alanine crystals Original Research Article
Author/Authors
J. Staun Olsen، نويسنده , , L. Gerward، نويسنده , , P.T.C Freire، نويسنده , , J. Mendes Filho ، نويسنده , , F.E.A. Melo، نويسنده , , A.G. Souza Filho، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
5
From page
1641
To page
1645
Abstract
Raman scattering and synchrotron X-ray diffraction have been used to investigate the high-pressure behavior of l-alanine. This study has confirmed a structural phase transition observed by Raman scattering at 2.3 GPa and identified it as a change from orthorhombic to tetragonal structure. Another phase transformation from tetragonal to monoclinic structure has been observed at about 9 GPa. From the equation of state, the zero-pressure bulk modulus and its pressure derivative have been determined as (31.5±1.4) GPa and 4.4±0.4, respectively.
Keywords
C. High pressure , C. Raman spectroscopy , C. X-ray diffraction , D. Phase transitions , A. Organic compounds
Journal title
Journal of Physics and Chemistry of Solids
Serial Year
2008
Journal title
Journal of Physics and Chemistry of Solids
Record number
1312276
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