Actions for Neutron and Raman scattering studies of surface adsorbed molecular vibrations and bulk phonons in ZrO{sub 2} nanoparticles [electronic resource].
Neutron and Raman scattering studies of surface adsorbed molecular vibrations and bulk phonons in ZrO{sub 2} nanoparticles [electronic resource].
Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1996. Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Inelastic neutron scattering was used to study the phonon densities of states of zirconia nanoparticles, the O-H stretch vibrations of physisorbed water molecules, and chemisorbed hydroxyl groups on the surface. Raman scattering was also used to measure the zone-center phonon modes. The observed distinct phonon frequencies and band widths at 10-120 meV reflect the different crystalline symmetries and compositional fluctuations in the small grain and interfacial regions of monoclinic ZrO₂, tetragonal or mixed cubic and tetragonal rare-earth-modified zirconia. The dynamics of water and hydroxyl groups on varying local structures of these zirconias result in the different frequencies of the O-H stretch vibrations at 400-600 meV.
Report Numbers
E 1.99:anl/ipns/cp--90685 E 1.99: conf-9611133--2 conf-9611133--2 anl/ipns/cp--90685
Published through SciTech Connect. 12/31/1996. "anl/ipns/cp--90685" " conf-9611133--2" "DE97001996" International symposium on surface nano-control of environmental catalysts and related materials, Tokyo (Japan), 25-27 Nov 1996. Ozawa, Masakuni; Suzuki, Suguru; Loong, C.K.; Nipko, J.C.