Inelastic neutron scattering due to acoustic vibrations confined in nanoparticles: theory and experiment

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dc.creatorSaviot, Lucien
dc.creatorNetting, Caleb H.
dc.creatorMurray, Daniel B.
dc.creatorRols, Stéphane
dc.creatorMermet, Alain
dc.creatorPapa, Anne-Laure
dc.creatorPighini, Catherine
dc.creatorAymes, Daniel
dc.creatorMillot, Nadine
dc.date2008-11-20
dc.date.accessioned2026-07-07T12:27:56Z
dc.date.available2026-07-07T12:27:56Z
dc.descriptionThe inelastic scattering of neutrons by nanoparticles due to acoustic vibrational modes (energy below 10 meV) confined in nanoparticles is calculated using the Zemach-Glauber formalism. Such vibrational modes are commonly observed by light scattering techniques (Brillouin or low-frequency Raman scattering). We also report high resolution inelastic neutron scattering measurements for anatase TiO2 nanoparticles in a loose powder. Factors enabling the observation of such vibrations are discussed. These include a narrow nanoparticle size distribution which minimizes inhomogeneous broadening of the spectrum and the presence of hydrogen atoms oscillating with the nanoparticle surfaces which enhances the number of scattered neutrons.
dc.description3 figures, 1 table
dc.identifierhttps://arxiv.org/abs/0811.3285
dc.identifierhttp://arxiv.org/abs/0811.3285
dc.identifierPhys. Rev. B 78, 245426 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.245426
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215380
dc.subjectMaterials Science
dc.titleInelastic neutron scattering due to acoustic vibrations confined in nanoparticles: theory and experiment
dc.typetext

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