Low energy cathodoluminescence analysis of damage build-up in ion irradiated spinel mono- and polycrystals
| Autor: | A. Stonert, Alexander Azarov, Renata Ratajczak, Jacek Jagielski, Iwona Jozwik, Marcin Zielinski, Cyprian Mieszczynski |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Nuclear and High Energy Physics Materials science Spinel Analytical chemistry Mineralogy Cathodoluminescence 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Fluence Characterization (materials science) Ion 0103 physical sciences engineering Radiation damage Crystallite Irradiation 0210 nano-technology Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 435:290-295 |
| ISSN: | 0168-583X |
| Popis: | In contrast to single crystalline materials a quantitative determination of defect formation in polycrystals is challenging. Here we use low-energy (3 keV) cathodoluminescence (CL) for structural characterization of single and polycrystalline magnesium aluminate spinel (MgAl2O4) exposed to irradiation with 300 keV Ar+ ions at room temperature in a wide fluence range of 1 × 1012–2 × 1016 cm−2. The results for single crystalline materials are also compared with conventional Rutherford Backscattering and Channeling spectrometry (RBS/C). It is demonstrated that damage formation in both single and polycrystalline spinels exhibits a multi-step character where polycrystalline material is more susceptible to ion irradiation. The results also imply that the low-energy CL is more sensitive to low damage levels as compared to RBS/C and it can be efficiently used as a complementary tool showing new perspectives in the damage accumulation studies in single- and polycrystalline materials. |
| Databáze: | OpenAIRE |
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