Abstract
| Original language | English |
|---|---|
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 69 |
| Issue number | 7 |
| Pages (from-to) | 1641-1645 |
| ISSN | 0022-3697 |
| DOIs | |
| Publication status | Published - 2008 |
Keywords
- Raman spectroscopy
- organic compounds
- phase transitions
- X-ray diffraction
- high pressure
Cite this
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Pressure-induced phase transformations in L-alanine crystals. / Olsen, J. Staun; Gerward, Leif; Freire, P.T.C.; Mendes, J. Filho; Melo, F.E.A.; Souza Filho, A.G.
In: Journal of Physics and Chemistry of Solids, Vol. 69, No. 7, 2008, p. 1641-1645.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Pressure-induced phase transformations in L-alanine crystals
AU - Olsen, J. Staun
AU - Gerward, Leif
AU - Freire, P.T.C.
AU - Mendes, J. Filho
AU - Melo, F.E.A.
AU - Souza Filho, A.G.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Raman spectroscopy
KW - organic compounds
KW - phase transitions
KW - X-ray diffraction
KW - high pressure
U2 - 10.1016/j.jpcs.2007.12.005
DO - 10.1016/j.jpcs.2007.12.005
M3 - Journal article
VL - 69
SP - 1641
EP - 1645
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 7
ER -