Clustering of gold atoms in ion-implanted silica after thermal annealing in different atmospheres - art. no. 075409

Authors
Miotello, A De Marchi, G Mattei, G Mazzoldi, P Sada, C
Citation
A. Miotello et al., Clustering of gold atoms in ion-implanted silica after thermal annealing in different atmospheres - art. no. 075409, PHYS REV B, 6307(7), 2001, pp. 5409
Citations number
24
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6307
Issue
7
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010215)6307:7<5409:COGAII>2.0.ZU;2-G
Abstract
The clustering process of gold atoms in ion-implanted silica, during anneal ing in different atmospheres, is experimentally investigated and phenomenol ogically described. With respect to inert (Ar) or reducing (H-2-Ar) atmosph ere, annealing in oxidizing (air) atmosphere is the most effective in promo ting cluster formation above 700-800 degreesC due to a thermally activated correlated diffusion of gold atoms and excess oxygen molecules coming from the atmosphere.