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Titolo:
Damage accumulation and recovery in gold-ion-irradiated barium titanate
Autore:
Jiang, W; Weber, WJ; Thevuthasan, S;
Indirizzi:
Pacific NW Natl Labs, Richland, WA 99352 USA Pacific NW Natl Labs Richland WA USA 99352 l Labs, Richland, WA 99352 USA
Titolo Testata:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
, volume: 175, anno: 2001,
pagine: 610 - 614
SICI:
0168-583X(200104)175:<610:DAARIG>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXIDES; SRTIO3;
Keywords:
ion irradiation; damage accumulation; disorder recovery; barium titanate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Weber, WJ Pacific NW Natl Labs, MS K8-93,POB 999, Richland, WA 99352 USA Pacific NW Natl Labs MS K8-93,POB 999 Richland WA USA 99352 USA
Citazione:
W. Jiang et al., "Damage accumulation and recovery in gold-ion-irradiated barium titanate", NUCL INST B, 175, 2001, pp. 610-614

Abstract

Single-crystal barium titanate (BaTiO3) wafers were irradiated 60 degrees off the surface normal at 170 and 300 K using 1.0 MeV Au2+ ions over a fluence range from 0.03 to 0.19 ions/nm(2). Disorder on both the Ba and Ti sublattices has been studied in situ using Rutherford backscattering spectrometry along the <1 1 0 > axial direction. At these irradiation temperatures, the temperature dependence of disordering is small. The dose for amorphization under these conditions is on the order of 0.5 dpa, which is 50% of that required to amorphize SrTiO3 under similar conditions. At low damage levels, recovery of disorder is observed at room temperature, suggesting at leastone lower temperature recovery stage. For more highly damaged states, two distinct recovery stages have been identified between 420 and 570 K and between 720 and 870 K. The recovery stage between 420 and 570 K is associated with the critical temperature for full amorphization (similar to 550 K) in BaTiO3. The higher temperature recovery stage is most likely associated with epitaxial recrystallization. (C) 2001 Published by Elsevier Science B.V.

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Documento generato il 26/01/20 alle ore 01:05:34