Xue, Haizhou ; Zarkadoula, Eva ; Sachan, Ritesh ; Zhang, Yanwen ; Trautmann, Christina ; Weber, William J. (2018)
Synergistically-enhanced ion track formation in pre-damaged strontium titanate by energetic heavy ions.
In: Acta Materialia, 150
doi: 10.1016/j.actamat.2018.03.027
Article, Bibliographie
Abstract
Latent ion tracks created by energetic heavy ions (12 MeV Ti to 946 MeV Au) in single crystal SrTiO3 are investigated using Rutherford backscattering spectrometry and scanning transmission electron microscopy. The results demonstrate that pre-existing irradiation damage, introduced via elastic collision processes, interacts synergistically with the electronic energy deposition from energetic heavy ions to enhance formation of latent ion tracks. The average amorphous cross-section increases with the level of pre-damage and is linearly proportional to the electronic energy loss of the ions, with a slope dependent on the pre-damage level. For the highest energy ions (629 MeV Xe and 946 MeV Au), the tracks are continuous over the pre-damaged depth, but become discontinuous beyond the pre-damaged region. This work provides new understanding and insights on ion-solid interactions that significantly impact the interpretation of latent track formation processes, models of amorphization, and the fabrication of electro-ceramic devices. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Erschienen: | 2018 |
| Creators: | Xue, Haizhou ; Zarkadoula, Eva ; Sachan, Ritesh ; Zhang, Yanwen ; Trautmann, Christina ; Weber, William J. |
| Type of entry: | Bibliographie |
| Title: | Synergistically-enhanced ion track formation in pre-damaged strontium titanate by energetic heavy ions |
| Language: | English |
| Date: | 15 May 2018 |
| Publisher: | Elsevier |
| Journal or Publication Title: | Acta Materialia |
| Volume of the journal: | 150 |
| DOI: | 10.1016/j.actamat.2018.03.027 |
| Abstract: | Latent ion tracks created by energetic heavy ions (12 MeV Ti to 946 MeV Au) in single crystal SrTiO3 are investigated using Rutherford backscattering spectrometry and scanning transmission electron microscopy. The results demonstrate that pre-existing irradiation damage, introduced via elastic collision processes, interacts synergistically with the electronic energy deposition from energetic heavy ions to enhance formation of latent ion tracks. The average amorphous cross-section increases with the level of pre-damage and is linearly proportional to the electronic energy loss of the ions, with a slope dependent on the pre-damage level. For the highest energy ions (629 MeV Xe and 946 MeV Au), the tracks are continuous over the pre-damaged depth, but become discontinuous beyond the pre-damaged region. This work provides new understanding and insights on ion-solid interactions that significantly impact the interpretation of latent track formation processes, models of amorphization, and the fabrication of electro-ceramic devices. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Uncontrolled Keywords: | Strontium titanate, Rutherford backscattering spectrometry/channeling, Ion track, Ion-beam processing, Molecular dynamics |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials |
| Date Deposited: | 23 Jan 2019 08:55 |
| Last Modified: | 29 Feb 2024 11:16 |
| PPN: | |
| Funders: | U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, University of Tennessee Governor's Chair program |
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