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Updated: Nov 26, 2025
High Pressure Single Crystal Diffraction at PX^2
Published on: January 16, 2017
High-pressure Raman investigation of high index facets boundedα-Fe2O3pseudocubic crystals
M Junaid Bushiri1, Divya Neravathu Gopi1, Virginia Monteseguro2,3
1Department of Physics, Cochin University of Science and Technology, Kochi-682022, Kerala, India.
Abstract:
High index facet bounded α-Fe2O3pseudocubic crystals has gained the attention of the scientific community due to its promising electrochemical sensing response towards aqueous ammonia. The structural stability of α-Fe2O3pseudocubic crystals is investigated through high-pressure Raman spectroscopy up to 22.2 GPa, and those results are compared with ourab initiotheoretical calculations. The symmetry of the experimental Raman-active modes has been assigned by comparison with theoretical data. In addition to the Raman-active modes, two additional Raman features are also detected, whose intensity increases with compression. The origin of these two additional peaks addressed in this study, reveals a strong dependence on the geometry and the low dimensionality as the most plausible explanation.
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