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Positron Annihilation at Planar Defects in Oxides
- Source :
- Materials Science Forum 733(2013), 240-244
- Publication Year :
- 2012
- Publisher :
- Trans Tech Publications, Ltd., 2012.
-
Abstract
- Planar defects may exhibit free volumes which, in principle, are detectable using positron annihilation spectroscopy. In this contribution, we present a preliminary theoretical study of positron trapping at stacking faults in zinc oxide and at a grain boundary in zirconia. In particular, we calculate the positron lifetime and positron binding energy to such defects. In the case of the grain boundary in zirconia, the influence of the yttrium segregation on the GB structure and positron characteristics is also examined. Calculated structural and positron characteristics are critically compared with experimental and other calculated data.
- Subjects :
- Materials science
stacking fault
Astrophysics::High Energy Astrophysical Phenomena
Binding energy
Stacking
chemistry.chemical_element
Molecular physics
Positron annihilation spectroscopy
Condensed Matter::Materials Science
Nuclear magnetic resonance
Positron
planar defects
positron trapping
General Materials Science
Cubic zirconia
Mechanical Engineering
zinc oxide
Yttrium
Condensed Matter Physics
grain boundary
chemistry
Mechanics of Materials
Physics::Accelerator Physics
High Energy Physics::Experiment
Grain boundary
zirconia
Stacking fault
Subjects
Details
- ISSN :
- 16629752
- Volume :
- 733
- Database :
- OpenAIRE
- Journal :
- Materials Science Forum
- Accession number :
- edsair.doi.dedup.....5feb54e01ab25cb0404eeff896069550