Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Accumulation and thermal recovery of disorder in Au2+-irradiated SrTiO3
Autore:
Thevuthasan, S; Jiang, W; Shutthanandan, V; Weber, WJ;
Indirizzi:
Battelle Mem Inst, Pacific NW Natl Labs, Environm Mol Sci Lab, Richland, WA 99352 USA Battelle Mem Inst Richland WA USA 99352 l Sci Lab, Richland, WA 99352 USA
Titolo Testata:
JOURNAL OF NUCLEAR MATERIALS
fascicolo: 1-2, volume: 289, anno: 2001,
pagine: 204 - 209
SICI:
0022-3115(200102)289:1-2<204:AATROD>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
BEAM-AMORPHIZED SRTIO3; IMPLANTED SRTIO3; EPITAXIAL RECRYSTALLIZATION; ION; IRRADIATION; CERAMICS; OXIDES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Thevuthasan, S Battelle Mem Inst, Pacific NW Natl Labs, Environm Mol Sci Lab, POB 999,MSIN K8-93, Richland, WA 99352 USA Battelle Mem Inst POB 999,MSIN K8-93 Richland WA USA 99352
Citazione:
S. Thevuthasan et al., "Accumulation and thermal recovery of disorder in Au2+-irradiated SrTiO3", J NUCL MAT, 289(1-2), 2001, pp. 204-209

Abstract

Damage accumulation and thermal recovery processes have been investigated in single crystal SrTiO3(100) irradiated with 1.0 MeV AU(2+) using in situ Rutherford backscattering spectrometry in channeling geometry (RBS/C). Samples were irradiated at temperatures of 170 and 300 K with ion fluences ranging from 0.10 to 0.40 AU(2+) /nm(2). The in situ RBS/C analysis indicates that the relative disorder shows a strong sigmoidal dependence on ion dose. After an ion fluence of 0.30 Au2+/nm(2) at 170 K, the buried region at the damage peak (similar to 60 nm) becomes fully amorphous, which corresponds to a dose of similar to0.8 displacement per atom (dpa). For irradiation at 300 K, an ion fluence of 0.40 Au2+/nm(2) (similar to1.1 dpa) is necessary toachieve an amorphous state at the damage peak. An analysis of the defects dechanneling factor suggests that the irradiated regions consist mostly of interstitial atoms or amorphous clusters. In situ thermal annealing experiments were performed to study damage recovery processes up to a maximum temperature of 870 K. The thermal recovery processes occur over a broad temperature range, and the disorder created by low ion fluences, 0.10-0.27 Au2+ /nm(2), is almost completely recovered after annealing at 870 K. (C) 2001 Published by Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 09:24:16