Irradiation-disorder Creation in SrTiO3
| Autor: | C. Sabathier, J. Chaumont, Stéphane Soulet, J. C. Krupa |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
010302 applied physics
Quenching Materials science Mechanical Engineering 02 engineering and technology Actinide 021001 nanoscience & nanotechnology Condensed Matter Physics Epitaxy 01 natural sciences Molecular physics Crystallography Mechanics of Materials Cascade 0103 physical sciences General Materials Science Irradiation Alpha decay 0210 nano-technology |
| Zdroj: | Journal of Materials Research. 17:9-13 |
| ISSN: | 2044-5326 0884-2914 |
| Popis: | The chemical durability of crystalline matrices loaded with actinides can be stronglyreduced when α-decays generate enough disorder to induce a crystalline to amorphoustransition. The alpha decay of actinides in SrTiO3 (α-recoils and α-particles) was simulated using Pb and He irradiation. This study shows that the He-ion annealingprocess that operates in some apatitic structure is negligible in SrTiO3 where thedisorder evolution at room temperature has a strong sigmoid dependence on dose. Thedirect-impact/defect-stimulated model, the cascade quenching/epitaxial recrystallizationmodel, and a direct-impact/cascade-overlap model were used to reproduce the SrTiO3-disorder evolution under Pb-ion irradiation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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