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Raman Spectroscopy: Overview

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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
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Other Nuclides: 31P, 19F, 15N NMR

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Updated: Jun 19, 2026

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

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Published on: August 22, 2015

[Hyperfine structure study of binary sodium phosphates by Raman spectroscopy].

Si-Jie Zhao¹, Jing-Lin You, Hui Chen

¹School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China. zhaosijie@hotmail.com

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|October 6, 2009

Summary

This summary is machine-generated.

Quantum chemistry calculations reveal how the stress index of tetrahedron (SIT) relates to the hyperfine structure of sodium phosphates. This method aids in analyzing Raman spectra and understanding microstructure changes with temperature, especially in molten states.

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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

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Published on: February 15, 2016

Area of Science:

Computational Chemistry
Materials Science
Solid-State Chemistry

Context:

Investigating the hyperfine structure and microstructure of binary sodium phosphates.
Utilizing quantum chemistry ab initio calculations for structural and vibrational analysis.
Adapting the stress index of tetrahedron (SIT) from silicates to phosphates.

Purpose:

To establish a relationship between SIT and Raman spectra for analyzing phosphate hyperfine structure.
To study the temperature-dependent phase transitions and microstructural evolution of Na5P3O10.
To quantitatively and qualitatively analyze phosphate Raman spectra using SIT and hyperfine structure.

Summary:

Optimized structures and calculated Raman frequencies of phosphate model clusters using RHF/6-31G (d, p).
Observed a phase transition in Na5P3O10 between 873-1073 K, with peak shifts to lower frequencies upon heating.
Identified changes in microstructure units (e.g., Q0, Q1, Q2 types) in molten Na5P3O10, leading to spectral broadening.

Impact:

Demonstrated the utility of SIT for characterizing phosphate microstructures and analyzing Raman spectra.
Provided insights into the temperature-induced microstructural transformations in sodium phosphates.
Established a novel approach for detailed analysis of phosphate materials' structural and vibrational properties.