Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction
We show that diffraction intensity into the first-order Laue zone (FOLZ) of a crystal can have a strong azimuthal dependence, where this FOLZ ring appears solely because of unidirectional atom position modulation. Such a modulation was already known to cause the appearance of elliptical columns in a...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Oxford University Press
2023
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| _version_ | 1797112755353812992 |
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| author | Silinga, A Allen, CS Barthel, J Ophus, C MacLaren, I |
| author_facet | Silinga, A Allen, CS Barthel, J Ophus, C MacLaren, I |
| author_sort | Silinga, A |
| collection | OXFORD |
| description | We show that diffraction intensity into the first-order Laue zone (FOLZ) of a crystal can have a strong azimuthal dependence, where this FOLZ ring appears solely because of unidirectional atom position modulation. Such a modulation was already known to cause the appearance of elliptical columns in atom-resolution images, but we show that measurement of the angle via four-dimensional scanning transmission electron microscopy (4DSTEM) is far more reliable and allows the measurement of the modulation direction with a precision of about 1° and an accuracy of about 3°. This method could be very powerful in characterizing atomic structures in three dimensions by 4DSTEM, especially in cases where the structure is found only in nanoscale regions or crystals. |
| first_indexed | 2024-03-07T08:28:24Z |
| format | Journal article |
| id | oxford-uuid:e9716f3a-b635-4037-8af2-666896e71b16 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:28:24Z |
| publishDate | 2023 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:e9716f3a-b635-4037-8af2-666896e71b162024-02-28T08:44:30ZMeasurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffractionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e9716f3a-b635-4037-8af2-666896e71b16EnglishSymplectic ElementsOxford University Press2023Silinga, AAllen, CSBarthel, JOphus, CMacLaren, IWe show that diffraction intensity into the first-order Laue zone (FOLZ) of a crystal can have a strong azimuthal dependence, where this FOLZ ring appears solely because of unidirectional atom position modulation. Such a modulation was already known to cause the appearance of elliptical columns in atom-resolution images, but we show that measurement of the angle via four-dimensional scanning transmission electron microscopy (4DSTEM) is far more reliable and allows the measurement of the modulation direction with a precision of about 1° and an accuracy of about 3°. This method could be very powerful in characterizing atomic structures in three dimensions by 4DSTEM, especially in cases where the structure is found only in nanoscale regions or crystals. |
| spellingShingle | Silinga, A Allen, CS Barthel, J Ophus, C MacLaren, I Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction |
| title | Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction |
| title_full | Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction |
| title_fullStr | Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction |
| title_full_unstemmed | Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction |
| title_short | Measurement of atomic modulation direction using the azimuthal variation of first-order Laue zone electron diffraction |
| title_sort | measurement of atomic modulation direction using the azimuthal variation of first order laue zone electron diffraction |
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