Determination of the Coupling Coefficient C() from the Calculations of the Low-frequency Raman Spectrum in PMMA
Abstract
Using the atom-atom potentials method, we have calculated the low-frequency Raman spectra of molecular crystal model with elements of disorder (Poly-Methyl-Methacrylate) PMMA that has a flexible molecule. Based on the results the coupling factor C() has been calculated. Anharmonicity of vibrations, electro-optical anharmonicity, and disorder were taken into account.
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