Changes in the phonon density of states of Fe induced by external strain
- Nuclear inelastic scattering of synchrotron radiation is used to study the changes induced by external tensile strain on the phonon density of states (pDOS) of polycrystalline Fe samples. The data are interpreted with the help of dedicated atomistic simulations. The longitudinal phonon peak at around 37 meV and also the second transverse peak at 27 meV are decreased under strain. This is caused by the production of defects under strain. Also the thermodynamic properties of the pDOS demonstrate a weakening of the force constants and of the mean phonon energy under strain. Remaining differences between experiment and simulation are discussed.
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| Author: | Robert Meyer, Lena Scherthan, Tim Hochdörffer, Sakshath Sadashivaiah, Juliusz A. Wolny, Matthias W. Klein, Marek Smaga, Tilmann Beck, Volker Schünemann, Herbert M. UrbassekORCiD |
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| URN: | urn:nbn:de:hbz:386-kluedo-77560 |
| DOI: | https://doi.org/10.1007/s00339-020-04169-y |
| ISSN: | 1432-0630 |
| Parent Title (English): | Applied Physics A |
| Publisher: | Springer Nature - Springer |
| Document Type: | Article |
| Language of publication: | English |
| Date of Publication (online): | 2024/03/04 |
| Year of first Publication: | 2020 |
| Publishing Institution: | Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau |
| Date of the Publication (Server): | 2024/03/04 |
| Issue: | 127 |
| Article Number: | 5 |
| Page Number: | 5 |
| Source: | https://link.springer.com/article/10.1007/s00339-020-04169-y |
| Faculties / Organisational entities: | Kaiserslautern - Fachbereich Physik |
| DDC-Cassification: | 5 Naturwissenschaften und Mathematik / 530 Physik |
| Collections: | Open-Access-Publikationsfonds |
| Licence (German): | Zweitveröffentlichung |