Inelastic Light Scattering Contribution to the Study of the Onset of Sintering of a Nanopowder

The onset of the sintering of 5 nm ZrO2 and TiO2 nanoparticles is investigated by various methods including inelastic light scattering. A special attention is paid to low-frequency Raman spectra where scattering from confined acoustic vibrations and quasielastic scattering manifest. Significant chan...

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Veröffentlicht in:	Journal of physical chemistry. C 2017-02, Vol.121 (4), p.2487-2494
Hauptverfasser:	Saviot, L, Le Gallet, S, Demoisson, F, David, L, Sudre, G, Girard, A, Margueritat, J, Mermet, A
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Sprache:	eng
Schlagworte:	Chemical Sciences Material chemistry Polymers
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container_title	Journal of physical chemistry. C
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creator	Saviot, L Le Gallet, S Demoisson, F David, L Sudre, G Girard, A Margueritat, J Mermet, A
description	The onset of the sintering of 5 nm ZrO2 and TiO2 nanoparticles is investigated by various methods including inelastic light scattering. A special attention is paid to low-frequency Raman spectra where scattering from confined acoustic vibrations and quasielastic scattering manifest. Significant changes are observed between samples sintered at different temperatures or applied forces. A detailed analysis of the spectra enables to follow the variation of the size of the nanoparticles, the surface area, and the formation of internanoparticles necks in the sintered materials. Finally, low-frequency scattering is shown to be more sensitive to the onset of sintering than most other experimental methods.
doi_str_mv	10.1021/acs.jpcc.6b12280
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title	Inelastic Light Scattering Contribution to the Study of the Onset of Sintering of a Nanopowder
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