Accelerating the Laser-Induced Phase Transition in Nanostructured FeRh via Plasmonic Absorption

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU151397" target="_blank" >RIV/00216305:26620/24:PU151397 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/10.1002/adfm.202313014" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/adfm.202313014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adfm.202313014" target="_blank" >10.1002/adfm.202313014</a>

Result language

angličtina

Original language name

Accelerating the Laser-Induced Phase Transition in Nanostructured FeRh via Plasmonic Absorption

Original language description

By ultrafast x-ray diffraction (UXRD), it is shown that the laser-induced magnetostructural phase transition in FeRh nanoislands proceeds faster and more complete than in continuous films. An intrinsic 8 ps timescale is observed for the nucleation of ferromagnetic (FM) domains in the optically excited fraction of both types of samples. For the continuous film, the substrate-near regions are not directly exposed to light and are only slowly transformed to the FM state after heating above the transition temperature via near-equilibrium heat transport. Numerical modeling of the absorption in the investigated nanoislands reveals a strong plasmonic contribution near the FeRh/MgO interface. The larger absorption and the optical excitation of the electrons in nearly the entire volume of the nanoislands enables a rapid phase transition throughout the entire volume at the intrinsic nucleation timescale. Nanostructuring FeRh thin films by solid state dewetting make the laser-induced antiferromagnetic to ferromagnetic phase transition more efficient and speed the switching up to the intrinsic timescale. Ultrafast x-ray diffraction experiments directly measure the structural order parameter averaged over the entire film. Finite element modeling reveals the enhanced plasmonic light absorption near the substrate as the crucial factor. image

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

—

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ADVANCED FUNCTIONAL MATERIALS

ISSN

1616-301X

e-ISSN

1616-3028

Volume of the periodical

34

Issue of the periodical within the volume

32

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

„“-„“

UT code for WoS article

001221268100001

EID of the result in the Scopus database

2-s2.0-85192799023