We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Evaluation of vacancy-type defects in ZnO by the positron annihilation lifetime spectroscopy.
- Authors
Ono, R.; Togimitsu, T.; Sato, W.
- Abstract
Thermal behavior of vacancy-type defects in polycrystalline ZnO was studied by the positron annihilation lifetime spectroscopy. Two-component analysis of the PALS spectra revealed that the defect-related longer-lifetime component decreases as the annealing temperature is raised, and almost disappears within 15 min when annealed at 1,273 K. We also found that the intensity of this component decreases with increasing density of the annealed ZnO pellets; however, little density dependence was seen in its lifetime. These observations evidently suggest that this component having long lifetime of about 400 ps corresponds to the positrons trapped in grain boundaries in the polycrystalline ZnO.
- Subjects
POSITRON annihilation; ZINC oxide; SPECTROMETRY; KIRKENDALL effect; ANNEALING of metals
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2015, Vol 303, Issue 2, p1223
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-014-3452-z