Infrared-induced ultrafast melting of nanostructured platinum films probed by an x-ray free-electron laser
Understanding non-equilibrium melting in metals is a topic of current interest. We investigated the solid-to-liquid phase transition in platinum induced by femtosecond infrared radiation at different fluences. The evolution of the atomic structure was probed on the picoseconds timescale by x rays generated by an x-ray free-electron laser (XFEL). To analyze scattering data, we employed a model developed for liquid metals. We observed a compression field propagating into the nanostructured thin film sample, as well as partial melting for the infrared fluence of $200\phantom{\rule{0.28em}{0ex}}\mathrm{mJ}\phantom{\rule{0.16em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}2}$, corresponding to about $280\phantom{\rule{0.28em}{0ex}}\mathrm{kJ}\phantom{\rule{0.16em}{0ex}}{\mathrm{kg}}^{\ensuremath{-}1}$ absorbed by the sample. Similar features were observed at higher infrared laser fluences. To support the interpretation of experimental findings, we performed two-temperature model simulations.
Authors
- Intae Eom (ORCID: https://orcid.org/0000-0002-3390-4052)
- Ruslan Khubbutdinov
- Chae Un Kim (ORCID: https://orcid.org/0000-0001-9350-8441)
- Luca Gelisio (ORCID: https://orcid.org/0000-0001-7832-6201)
- Young Yong Kim (ORCID: https://orcid.org/0000-0001-6102-9518)
- Hoyeol Lee (ORCID: https://orcid.org/0000-0002-9995-1441)
- Daewoong Nam (ORCID: https://orcid.org/0000-0002-4544-4663)
- Moonhor Ree (ORCID: https://orcid.org/0000-0001-5562-2913)
- Xiang Li (ORCID: https://orcid.org/0000-0001-6023-8561)
- Minseok Kim (ORCID: https://orcid.org/0000-0002-2158-061X)
- Sangsoo Kim (ORCID: https://orcid.org/0000-0003-4005-5404)
- Seon Woo Lim (ORCID: https://orcid.org/0000-0002-4707-2947)
- Ivan A. Vartanyants
Institutions
- Pohang University of Science and Technology (KR)
- Deutsches Elektronen-Synchrotron DESY (DE)
- Surface (Brazil) (BR)
- Pohang Accelerator Laboratory
- Ulsan National Institute of Science and Technology (KR)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2024-10-11
- DOI
- https://doi.org/10.1103/physrevb.110.144303
- Citations
- 1
- Primary Topic
- Laser-induced spectroscopy and plasma
- Type
- article
- Field-Weighted Citation Impact
- 0.27
Funders
- Korea Institute of Science and Technology Information
- National Research Foundation of Korea
- Korea Research Environment Open Network