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Updated: Aug 7, 2026
High Pressure Single Crystal Diffraction at PX^2
Published on: January 16, 2017
Application of principal component analysis and Raman spectroscopy in the analysis of polycrystalline BaTiO3 at high
R Y Sato-Berrú1, E V Mejía-Uriarte, C Frausto-Reyes
1Centro de Ciencias Aplicadas y Desarrollo Tecnológico, UNAM, C.P. 04510, México D.F., Mexico. roys_la@yahoo.com
Abstract:
The principal component analysis (PCA) was applied to Raman spectra of polycrystalline BaTiO(3) under pressure from atmospheric pressure to approximately 6.72 GPa. For the system utilized, PCA was able to distinguish spectral features and to determine the phase transition pressure: tetragonal to cubic at approximately 2.0 GPa. The present study demonstrates the potentialities of the application of PCA to the investigation on phase transitions at high pressure by Raman spectroscopy.
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