One phonon relaxation processes in Y2O3 : Eu3+ nanocrystals

Authors
Yang, HS Feofilov, SP Williams, DK Milora, JC Tissue, BM Meltzer, RS Dennis, WM
Citation
Hs. Yang et al., One phonon relaxation processes in Y2O3 : Eu3+ nanocrystals, PHYSICA B, 263, 1999, pp. 476-478
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
263
Year of publication
1999
Pages
476 - 478
Database
ISI
SICI code
0921-4526(199903)263:<476:OPRPIY>2.0.ZU;2-0
Abstract
The phonon spectrum for isolated nanoparticles is expected to become discre te with a gap opening up at very low frequencies. In this paper we investig ate the effect of the modified phonon spectrum on the relaxation of closely spaced electronic levels. We compare the results for nanoparticles with th ose for larger (similar to mu m) size particles with the same crystal struc ture. (C) 1999 Elsevier Science B.V. All rights reserved.