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.
Physical Description:: 17 pages : digital, PDF file
Additional Creators:: Argonne National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information

Access Online

www.osti.gov

Availability

Finding items...

Restrictions on Access:

Free-to-read Unrestricted online access

Summary:

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

Subject(s):

Materials Science

Other Subject(s):

Note:

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.

Funding Information:

W-31109-ENG-38

View MARC record | catkey: 14454489