English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/189425
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Magnetisation switching of FePt nanoparticle recording medium by femtosecond laser pulses

AuthorsJohn, R.; Berritta, M.; Hinzke, D.; Müller, C.; Santos, T.; Ulrichs, H.; Nieves, Pablo ; Walowski, J.; Mondal, R.; Chubykalo-Fesenko, O. ; McCord, J.; Oppeneer, P. M.; Nowak, U.; Münzenberg, M.
Issue Date23-Jun-2017
PublisherSpringer Nature
CitationScientific Reports 7: 4114 (2017)
AbstractManipulation of magnetisation with ultrashort laser pulses is promising for information storage device applications. The dynamics of the magnetisation response depends on the energy transfer from the photons to the spins during the initial laser excitation. A material of special interest for magnetic storage are FePt nanoparticles, for which switching of the magnetisation with optical angular momentum was demonstrated recently. The mechanism remained unclear. Here we investigate experimentally and theoretically the all-optical switching of FePt nanoparticles. We show that the magnetisation switching is a stochastic process. We develop a complete multiscale model which allows us to optimize the number of laser shots needed to switch the magnetisation of high anisotropy FePt nanoparticles in our experiments. We conclude that only angular momentum induced optically by the inverse Faraday effect will provide switching with one single femtosecond laser pulse.
Publisher version (URL)https://doi.org/10.1038/s41598-017-04167-w
Identifiersdoi: 10.1038/s41598-017-04167-w
e-issn: 2045-2322
Appears in Collections:(ICMM) Artículos
Files in This Item:
File Description SizeFormat 
magnetisation_switching_FePt_nanoparticle_recording_medium_femtosecond_laser_pulses.pdf4,9 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.