Optical phonon confinement in zinc oxide nanoparticles
Autor: | B. S. Bendre, Akhilesh K. Arora, Shailaja Mahamuni, M. Rajalakshmi |
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Rok vydání: | 2000 |
Předmět: |
Diffraction
Materials science business.industry Phonon General Physics and Astronomy Nanoparticle chemistry.chemical_element Zinc Molecular physics Condensed Matter::Materials Science symbols.namesake Optics chemistry Dispersion (optics) symbols Particle business Raman spectroscopy Wurtzite crystal structure |
Zdroj: | Journal of Applied Physics. 87:2445-2448 |
ISSN: | 1089-7550 0021-8979 |
DOI: | 10.1063/1.372199 |
Popis: | Effect of confinement is investigated on optical phonons of different symmetries in the nanoparticles of zinc oxide with wurtzite structure using Raman spectroscopy. An optical phonon confinement model is used for calculating the theoretical line shapes, which exhibit different asymmetric broadening and shifts, depending on the symmetries of phonon and their dispersion curves. The best fit to the data is found for particle diameters consistent with those estimated using x-ray diffraction. |
Databáze: | OpenAIRE |
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