Damage Accumulation and Recovery in Gold-Ion-Irradiated Barium Titanate

Journal Article · Mon Jun 04 04:00:00 EDT 2001 · Nuclear Instruments and Methods in Physics Research, Section B

DOI:https://doi.org/10.1016/S0168-583X(01)00450-5· OSTI ID:15001271

Jiang, Weilin; Weber, William J; Thevuthasan, Suntharampillai

Single-crystal barium titanate (BaTiO) wafers were irradiated 60? off the surface normal at 170 and 300 K using 1.0 MeV Au ions over a fluence range from 0.03 to 0.19 ions/nm. Disorder on both the Ba and Ti sublattices has been studied in situ using Rutherford backscattering spectrometry along the <110> 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 SrTiO under similar conditions. At low damage levels, recovery of disorder is observed at room temperature, suggesting at least one 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 ({approx}550 K) in BaTiO. The higher temperature recovery stage is most likely associated with epitaxial recrystallization.

• Research Organization: Pacific Northwest National Lab., Richland, WA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 15001271
• Report Number(s): PNNL-SA-33658; KC0201020
• Journal Information: Nuclear Instruments and Methods in Physics Research, Section B, Journal Name: Nuclear Instruments and Methods in Physics Research, Section B Vol. 175; ISSN 0168-583X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
GOLD IONS
ION IMPLANTATION
RECRYSTALLIZATION
REGENERATION
RUTHERFORD BACKSCATTERING SPECTROSCOPY
TEMPERATURE DEPENDENCE
TITANATES