Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7691008 | Vibrational Spectroscopy | 2016 | 6 Pages |
Abstract
This study reports on the effect of high hydrostatic pressure on the vibrational spectra of Fe2(MoO4)3 microcrystals using Raman scattering in combination with a membrane diamond-anvil cell. The ferric molybdate was obtained by the conventional hydrothermal method, and the structural and morphological properties of the sample were characterized using additionally X-ray diffraction, scanning electron microscopy, as well as energy dispersive spectroscopy. The X-ray diffraction measurements have shown that the crystals have a monoclinic structure. At pressures higher than 4.8Â GPa, the disappearance of external modes was observed, suggesting that pressure has induced a breakdown in the translational symmetry of the crystal system. The high-pressure amorphous phase is reversible and attributed to an incomplete crystal-amorphous transformation.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
J.V.B. Moura, G.S. Pinheiro, P.T.C. Freire, J. Mendes Filho, G.D. Saraiva, B.C. Viana, C. Luz-Lima,