# Element-specific ultrafast lattice dynamics in FePt nanoparticles https://mdr.nims.go.jp/datasets/6bc39783-3781-4427-85e8-8b0aa5233b50 ## Files - [SDY24-AR-00043.pdf](https://mdr.nims.go.jp/filesets/7c9b7016-deec-46be-a6aa-3e65bff4b00f/download) ([Detail](https://mdr.nims.go.jp/filesets/7c9b7016-deec-46be-a6aa-3e65bff4b00f.md)) ## Id 6bc39783-3781-4427-85e8-8b0aa5233b50 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2024-11-12T04:49:14.211314Z ## Updated at 2024-11-13T03:30:20.267859Z ## Published at 2024-11-13T03:30:20.462496Z ## Doi https://doi.org/10.48505/nims.4948 ## First published url https://doi.org/10.1063/4.0000260 ## Date published 2024-11-01 ## Recorded date published 2024-11-1 ## Resource type journal_article ## Manuscript type accepted_manuscript ## Collection ## Title - title: Element-specific ultrafast lattice dynamics in FePt nanoparticles title_type: original lang: en ## Description - description: "Light-matter interaction at the nanoscale in magnetic alloys and heterostructures is\r\na topic of intense research in view of potential applications in high-density magnetic recording. While the element-specific dynamics of electron spins is directly accessible to resonant x-ray pulses with femtosecond time structure, the possible element-specific atomic motion remains largely unexplored. We use ultrafast electron diffraction to probe the temporal evolution of lattice Bragg peaks of FePt nanoparticles embedded in a carbon matrix following excitation by an optical\r\nfemtosecond laser pulse. The diffraction interference between Fe and Pt sublattices enables us to demonstrate that the Fe mean-square vibration amplitudes are significantly larger that those of Pt as expected from their different atomic mass. Both are found to increase as energy is transferred from the laser-excited electrons to the lattice. Contrary to this intuitive behavior, we observe a laser-induced lattice expansion that is larger for Pt than for Fe atoms during the first picosecond\r\nafter laser excitation. This effect points to the strain-wave driven lattice expansion with the longitudinal acoustic Pt motion dominating that of Fe." description_type: abstract lang: und ## Creator - name: Diego Turenne role: author orcid: https://orcid.org/0000-0001-5992-9699 - name: Igor Vaskivskyi role: author orcid: https://orcid.org/0000-0003-4090-1471 - name: Klaus Sokolowski-Tinten role: author orcid: https://orcid.org/0000-0002-7979-5357 - name: Xijie J. Wang role: author orcid: https://orcid.org/0000-0003-3324-4709 - name: Alexander H. Reid role: author orcid: https://orcid.org/0000-0002-7587-295X - name: Xiaozhe Shen role: author orcid: https://orcid.org/0000-0002-6844-608X - name: Ming-Fu Lin role: author orcid: https://orcid.org/0000-0001-8086-2484 - name: Suji Park role: author orcid: https://orcid.org/0000-0002-2269-7705 - name: Stephen Weathersby role: author orcid: https://orcid.org/0000-0002-0253-4781 - name: Michael Kozina role: author orcid: https://orcid.org/0000-0002-4747-345X - name: Matthias C. Hoffmann role: author orcid: https://orcid.org/0000-0002-3596-9853 - name: Jian Wang role: author orcid: https://orcid.org/0000-0001-5553-303X - name: Jakub Sebesta role: author orcid: https://orcid.org/0000-0002-8195-4353 - name: Yukiko K. Takahashi role: author orcid: https://orcid.org/0000-0001-9197-7236 - name: Oscar Grånäs role: author orcid: https://orcid.org/0000-0002-1482-2182 - name: Peter M. Oppeneer role: author orcid: https://orcid.org/0000-0002-9069-2631 - name: Hermann A. Dürr role: author orcid: https://orcid.org/0000-0001-9680-8730 ## Contact agent ## Publisher organization: AIP Publishing ## Managing organization ## Keyword - subject: ultra fast lattice dynamics schema: not_defined - subject: FePt schema: not_defined - subject: nanoparticles schema: not_defined ## Rights - description: 'This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Diego Turenne, Igor Vaskivskyi, Klaus Sokolowski-Tinten, Xijie J. Wang, Alexander H. Reid, Xiaozhe Shen, Ming-Fu Lin, Suji Park, Stephen Weathersby, Michael Kozina, Matthias C. Hoffmann, Jian Wang, Jakub Sebesta, Yukiko K. Takahashi, Oscar Grånäs, Peter M. Oppeneer, Hermann A. Dürr; Element-specific ultrafast lattice dynamics in FePt nanoparticles. Struct. Dyn. 1 November 2024; 11 (6): 064501 and may be found at https://doi.org/10.1063/4.0000260.' identifier: http://rightsstatements.org/vocab/InC/1.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Structural Dynamics issn: '23297778' volume: '11' issue: '6' ## Conference ## Related item ## Funding - identifier: DE-AC02-76SF00515 funder_name: Office of Science - funder_name: Vetenskapsrådet - identifier: '278162697' funder_name: Deutsche Forschungsgemeinschaft - identifier: '2022.0079' funder_name: Knut och Alice Wallenbergs Stiftelse - identifier: '2023.336' funder_name: Knut och Alice Wallenbergs Stiftelse - funder_name: Knut och Alice Wallenbergs Stiftelse ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 7c9b7016-deec-46be-a6aa-3e65bff4b00f filename: SDY24-AR-00043.pdf content_type: application/pdf size: 915194 md5: 66b8c277f20c87284808c88401d03c76 ## Thumbnail fileset_id: 7c9b7016-deec-46be-a6aa-3e65bff4b00f filename: SDY24-AR-00043.pdf