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Damage Accumulation and Thermal Recovery in SrTiO3 Implanted with Au2+ Ions

Published online by Cambridge University Press:  15 February 2011

S. Thevuthasan ,
W. Jiang ,
W.J. Weber  and
D.E. McCready
S. Thevuthasan
Affiliation:
Pacific Northwest National Laboratory, Richland (PNNL), WA 99352, theva@pnl.gov
W. Jiang
Affiliation:
Pacific Northwest National Laboratory, Richland (PNNL), WA 99352
W.J. Weber
Affiliation:
Pacific Northwest National Laboratory, Richland (PNNL), WA 99352
D.E. McCready
Affiliation:
Pacific Northwest National Laboratory, Richland (PNNL), WA 99352
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Abstract

Damage accumulation and recovery process have been investigated in single crystal SrTiO3 irradiated with 1.0 MeV Au2+ using in-situ Rutherford Backscattering Spectrometry (RBS) in Channeling geometry. Samples were irradiated at a temperature of 200 K with ion fluences ranging from 5.0×1013 2.5×1014Au2+/cm2 (0.22 – 1.10 dpa at damage peak). Subsequent isochronal annealing experiments were performed to study damage recovery processes up to a maximum temperature of 870 K. At an ion fluence between 2.0–2.5×1014Au2+/cm2 (0.88 – 1.10 dpa), the implanted region, which is just below the surface, becomes amorphous. The recovery processes occur over a broad temperature range, and the damage created by low ion fluences, 5.0×1013 − 1.0×1014 Au2+/cm2, is almost completely recovered after annealing at 870 K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 540: Symposium N / Microstructural Processes in Irradiated Materials , 1998 , 373
Copyright
Copyright © Materials Research Society 1999

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