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

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-01637201
Contributor : Florian Doucet <>
Submitted on : Friday, June 4, 2021 - 7:21:16 PM
Last modification on : Thursday, July 22, 2021 - 3:04:04 AM

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L. Saviot, S. Le Gallet, F. Demoisson, Laurent David, Guillaume Sudre, et al.. Inelastic Light Scattering Contribution to the Study of the Onset of Sintering of a Nanopowder. Journal of Physical Chemistry C, American Chemical Society, 2017, 121 (4), pp.2487-2494. ⟨10.1021/acs.jpcc.6b12280⟩. ⟨hal-01637201⟩

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