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Titolo:
Vacuum versus gas environment felt the synthesis of nanocomposite films bypulsed-laser deposition
Autore:
Afonso, CN; Gonzalo, J; Serna, R; de Sande, JCG; Ricolleau, C; Grigis, C; Gandais, M; Hole, DE; Townsend, PD;
Indirizzi:
CSIC, Inst Opt, E-28006 Madrid, Spain CSIC Madrid Spain E-28006CSIC, Inst Opt, E-28006 Madrid, Spain UPM, EUITT, Dept Ingn Circuitos & Sistemas, Madrid 28031, Spain UPM Madrid Spain 28031 pt Ingn Circuitos & Sistemas, Madrid 28031, Spain Univ Paris 06, Lab Mineral Cristallog, F-75252 Paris, France Univ Paris 06 Paris France F-75252 ral Cristallog, F-75252 Paris, France Univ Sussex, Sch Engn, Brighton BN1 9QH, E Sussex, England Univ Sussex Brighton E Sussex England BN1 9QH BN1 9QH, E Sussex, England
Titolo Testata:
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
, volume: 69, anno: 1999, supplemento:, S
pagine: S201 - S207
SICI:
0947-8396(199912)69:<S201:VVGEFT>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPOSITE THIN-FILMS; ABLATION; PARTICLES; COPPER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Afonso, CN CSIC, Inst Opt, Serrano 121, E-28006 Madrid, Spain CSIC Serrano121 Madrid Spain E-28006 1, E-28006 Madrid, Spain
Citazione:
C.N. Afonso et al., "Vacuum versus gas environment felt the synthesis of nanocomposite films bypulsed-laser deposition", APPL PHYS A, 69, 1999, pp. S201-S207

Abstract

Nanocomposite films formed by Cu nanocrystals (NCs) with sizes < 10 nm embedded in an amorphous Al2O3 host have been grown by alternate pulsed-laser deposition both in vacuum and in a buffer gas (Ar) up to pressures of 0.1 Torr. The dimensions, dimension distributions, and shape of the NC produced in vacuum and in Ar up to pressures of 5 x 10(-3) Torr follow a similar trend as a function of the Cu areal density. This allows us to conclude that the nucleation and growth of the NC are dominated by processes occurring at the substrate surface rather than in the gas phase. For Ar pressures greater than or equal to 5 x 10(-2) Torr, the anisotropy of the NC is enhanced, the deposition rate decreases abruptly and a significant cant amount of the buffer gas is incorporated into the host, thus leading to the formation of a porous material.

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Documento generato il 09/04/20 alle ore 10:47:27