Towards shaping picosecond strain pulses via magnetostrictive transducers.
Magnetostriction
Nanoscale heat transfer
Negative thermal expansion
Picosecond ultrasonics
Ultrafast photoacoustics
Ultrafast x-ray diffraction
Journal
Photoacoustics
ISSN: 2213-5979
Titre abrégé: Photoacoustics
Pays: Germany
ID NLM: 101622604
Informations de publication
Date de publication:
Apr 2023
Apr 2023
Historique:
received:
05
12
2022
revised:
12
02
2023
accepted:
14
02
2023
entrez:
6
3
2023
pubmed:
7
3
2023
medline:
7
3
2023
Statut:
epublish
Résumé
Using time-resolved x-ray diffraction, we demonstrate the manipulation of the picosecond strain response of a metallic heterostructure consisting of a dysprosium (Dy) transducer and a niobium (Nb) detection layer by an external magnetic field. We utilize the first-order ferromagnetic-antiferromagnetic phase transition of the Dy layer, which provides an additional large contractive stress upon laser excitation compared to its zero-field response. This enhances the laser-induced contraction of the transducer and changes the shape of the picosecond strain pulses driven in Dy and detected within the buried Nb layer. Based on our experiment with rare-earth metals we discuss required properties for functional transducers, which may allow for novel field-control of the emitted picosecond strain pulses.
Identifiants
pubmed: 36874592
doi: 10.1016/j.pacs.2023.100463
pii: S2213-5979(23)00016-2
pmc: PMC9982602
doi:
Types de publication
Journal Article
Langues
eng
Pagination
100463Informations de copyright
© 2023 The Authors.
Déclaration de conflit d'intérêts
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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