Dopant site occupancy determined by core-loss-filtered, position-averaged convergent beam electron diffraction
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914110800658432 |
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| author | Deimetry, Michael Petersen, Timothy C. Weyland, Matthew Findlay, Scott D. |
| author_facet | Deimetry, Michael Petersen, Timothy C. Weyland, Matthew Findlay, Scott D. |
| contents | In the elastic scattering regime, probe position-averaged convergent beam electron diffraction (PACBED) patterns have proven robust for estimating specimen thickness and mistilt. Through simulation, we show that core-loss-filtered PACBED patterns can be used to measure the site occupancy of a small concentration of dopants in an otherwise known crystal structure. By leveraging the reciprocity between scanning and conventional transmission electron microscopy, we interpret core-loss PACBED patterns using a strategy traditionally used for determining dopant concentrations via energy dispersive X-ray spectroscopy. We show that differences in the interaction range of different elements hinder a purely measurement-based quantification strategy, but that this can be overcome through comparison with simulations that generalize the Cliff-Lorimer k-factors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_12532 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dopant site occupancy determined by core-loss-filtered, position-averaged convergent beam electron diffraction Deimetry, Michael Petersen, Timothy C. Weyland, Matthew Findlay, Scott D. Other Condensed Matter Applied Physics In the elastic scattering regime, probe position-averaged convergent beam electron diffraction (PACBED) patterns have proven robust for estimating specimen thickness and mistilt. Through simulation, we show that core-loss-filtered PACBED patterns can be used to measure the site occupancy of a small concentration of dopants in an otherwise known crystal structure. By leveraging the reciprocity between scanning and conventional transmission electron microscopy, we interpret core-loss PACBED patterns using a strategy traditionally used for determining dopant concentrations via energy dispersive X-ray spectroscopy. We show that differences in the interaction range of different elements hinder a purely measurement-based quantification strategy, but that this can be overcome through comparison with simulations that generalize the Cliff-Lorimer k-factors. |
| title | Dopant site occupancy determined by core-loss-filtered, position-averaged convergent beam electron diffraction |
| topic | Other Condensed Matter Applied Physics |
| url | https://arxiv.org/abs/2508.12532 |