Please use this identifier to cite or link to this item:
doi:10.22028/D291-39388
Title: | Disentangling structural and kinetic components of the α-relaxation in supercooled metallic liquids |
Author(s): | Neuber, Nico Gross, Oliver Frey, Maximilian Bochtler, Benedikt Kuball, Alexander Hechler, Simon Yang, Fan Pineda, Eloi Westermeier, Fabian Sprung, Michael Schäfer, Florian Gallino, Isabella Busch, Ralf Ruta, Beatrice |
Language: | English |
Title: | Communications Physics |
Volume: | 5 |
Issue: | 1 |
Publisher/Platform: | Springer Nature |
Year of Publication: | 2022 |
Free key words: | Glasses Metals and alloys Surfaces, interfaces and thin films |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | The particle motion associated to the α-relaxation in supercooled liquids is still challenging scientists due to its difficulty to be probed experimentally. By combining synchrotron techniques, we report the existence of microscopic structure-dynamics relationships in Pt42.5Cu27Ni9.5P21 and Pd42.5Cu27Ni9.5P21 liquids which allows us to disentangle structural and kinetic contributions to the α-process. While the two alloys show similar kinetic fragilities, their structural fragilities differ and correlate with the temperature dependence of the stretching parameter describing the decay of the density fluctuations. This implies that the evolution of dynamical heterogeneities in supercooled alloys is determined by the rigidity of the melt structure. We find also that the atomic motion not only reflects the topological order but also the chemical short-range order, which can lead to a surprising slowdown of the αprocess at the mesoscopic length scale. These results will contribute to the comprehension of the glass transition, which is still missing. |
DOI of the first publication: | 10.1038/s42005-022-01099-4 |
URL of the first publication: | https://www.nature.com/articles/s42005-022-01099-4 |
Link to this record: | urn:nbn:de:bsz:291--ds-393884 hdl:20.500.11880/35513 http://dx.doi.org/10.22028/D291-39388 |
ISSN: | 2399-3650 |
Date of registration: | 28-Mar-2023 |
Description of the related object: | Supplementary information |
Related object: | https://static-content.springer.com/esm/art%3A10.1038%2Fs42005-022-01099-4/MediaObjects/42005_2022_1099_MOESM1_ESM.pdf https://static-content.springer.com/esm/art%3A10.1038%2Fs42005-022-01099-4/MediaObjects/42005_2022_1099_MOESM2_ESM.pdf |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Materialwissenschaft und Werkstofftechnik |
Professorship: | NT - Prof. Dr. Ralf Busch NT - Prof. Dr. Christian Motz |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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File | Description | Size | Format | |
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s42005-022-01099-4.pdf | 1,74 MB | Adobe PDF | View/Open |
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