High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique
The most accurate measurements of the mass attenuation coefficient for metals at low temperature for the zinc K-edge from 9.5 keV to 11.5 keV at temperatures of 10 K, 50 K, 100 K and 150 K using the hybrid technique are reported. This is the first time transition metal X-ray absorption fine structur...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Union of Crystallography
2023-01-01
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| Series: | Journal of Synchrotron Radiation |
| Subjects: | |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600577522010293 |
| _version_ | 1797960662074261504 |
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| author | Marcus W. John Daniel Sier Ruwini S. K. Ekanayake Martin J. Schalken Chanh Q. Tran Bernt Johannessen Martin D. de Jonge Peter Kappen Christopher T. Chantler |
| author_facet | Marcus W. John Daniel Sier Ruwini S. K. Ekanayake Martin J. Schalken Chanh Q. Tran Bernt Johannessen Martin D. de Jonge Peter Kappen Christopher T. Chantler |
| author_sort | Marcus W. John |
| collection | DOAJ |
| description | The most accurate measurements of the mass attenuation coefficient for metals at low temperature for the zinc K-edge from 9.5 keV to 11.5 keV at temperatures of 10 K, 50 K, 100 K and 150 K using the hybrid technique are reported. This is the first time transition metal X-ray absorption fine structure (XAFS) has been studied using the hybrid technique and at low temperatures. This is also the first hybrid-like experiment at the Australian Synchrotron. The measured transmission and fluorescence XAFS spectra are compared and benchmarked against each other with detailed systematic analyses. A recent method for modelling self-absorption in fluorescence has been adapted and applied to a solid sample. The XAFS spectra are analysed using eFEFFIT to provide a robust measurement of the evolution of nanostructure, including such properties as net thermal expansion and mean-square relative displacement. This work investigates crystal dynamics, nanostructural evolution and the results of using the Debye and Einstein models to determine atomic positions. Accuracies achieved, when compared with the literature, exceed those achieved by both relative and differential XAFS, and represent a state-of-the-art for future structural investigations. Bond length uncertainties are of the order of 20–40 fm. |
| first_indexed | 2024-04-11T00:48:35Z |
| format | Article |
| id | doaj.art-0aed2ab87f564f369c3189cea54a4dc5 |
| institution | Directory Open Access Journal |
| issn | 1600-5775 |
| language | English |
| last_indexed | 2024-04-11T00:48:35Z |
| publishDate | 2023-01-01 |
| publisher | International Union of Crystallography |
| record_format | Article |
| series | Journal of Synchrotron Radiation |
| spelling | doaj.art-0aed2ab87f564f369c3189cea54a4dc52023-01-05T10:01:29ZengInternational Union of CrystallographyJournal of Synchrotron Radiation1600-57752023-01-0130114716810.1107/S1600577522010293rv5168High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid techniqueMarcus W. John0Daniel Sier1Ruwini S. K. Ekanayake2Martin J. Schalken3Chanh Q. Tran4Bernt Johannessen5Martin D. de Jonge6Peter Kappen7Christopher T. Chantler8School of Physics, University of Melbourne, Melbourne, AustraliaSchool of Physics, University of Melbourne, Melbourne, AustraliaSchool of Physics, University of Melbourne, Melbourne, AustraliaSchool of Physics, University of Melbourne, Melbourne, AustraliaLa Trobe University, La Trobe, AustraliaAustralian Synchrotron, ANSTO, Clayton, AustraliaAustralian Synchrotron, ANSTO, Clayton, AustraliaAustralian Synchrotron, ANSTO, Clayton, AustraliaSchool of Physics, University of Melbourne, Melbourne, AustraliaThe most accurate measurements of the mass attenuation coefficient for metals at low temperature for the zinc K-edge from 9.5 keV to 11.5 keV at temperatures of 10 K, 50 K, 100 K and 150 K using the hybrid technique are reported. This is the first time transition metal X-ray absorption fine structure (XAFS) has been studied using the hybrid technique and at low temperatures. This is also the first hybrid-like experiment at the Australian Synchrotron. The measured transmission and fluorescence XAFS spectra are compared and benchmarked against each other with detailed systematic analyses. A recent method for modelling self-absorption in fluorescence has been adapted and applied to a solid sample. The XAFS spectra are analysed using eFEFFIT to provide a robust measurement of the evolution of nanostructure, including such properties as net thermal expansion and mean-square relative displacement. This work investigates crystal dynamics, nanostructural evolution and the results of using the Debye and Einstein models to determine atomic positions. Accuracies achieved, when compared with the literature, exceed those achieved by both relative and differential XAFS, and represent a state-of-the-art for future structural investigations. Bond length uncertainties are of the order of 20–40 fm.http://scripts.iucr.org/cgi-bin/paper?S1600577522010293xafshybrid techniquetransmission and fluorescencezincthermal evolution |
| spellingShingle | Marcus W. John Daniel Sier Ruwini S. K. Ekanayake Martin J. Schalken Chanh Q. Tran Bernt Johannessen Martin D. de Jonge Peter Kappen Christopher T. Chantler High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique Journal of Synchrotron Radiation xafs hybrid technique transmission and fluorescence zinc thermal evolution |
| title | High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique |
| title_full | High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique |
| title_fullStr | High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique |
| title_full_unstemmed | High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique |
| title_short | High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique |
| title_sort | high accuracy transmission and fluorescence xafs of zinc at 10 k 50 k 100 k and 150 k using the hybrid technique |
| topic | xafs hybrid technique transmission and fluorescence zinc thermal evolution |
| url | http://scripts.iucr.org/cgi-bin/paper?S1600577522010293 |
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