Magnetisation switching of FePt nanoparticle recording medium by femtosecond laser pulses

Lade...
Vorschaubild
Dateien
John_0-415582.pdf
John_0-415582.pdfGröße: 4.79 MBDownloads: 679
Datum
2017
Autor:innen
John, Robin
Berritta, Marco
Müller, Jakob C.
Santos, Tiffany
Ulrichs, Henning
Nieves, Pablo
Walowski, Jakob
Chubykalo-Fesenko, Oksana
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
Link zur Lizenz
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Open Access Gold
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Zusammenfassung

Manipulation 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.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690JOHN, Robin, Marco BERRITTA, Denise HINZKE, Jakob C. MÜLLER, Tiffany SANTOS, Henning ULRICHS, Pablo NIEVES, Jakob WALOWSKI, Ritwik MONDAL, Oksana CHUBYKALO-FESENKO, Jeffrey MCCORD, Peter M. OPPENEER, Ulrich NOWAK, Markus MÜNZENBERG, 2017. Magnetisation switching of FePt nanoparticle recording medium by femtosecond laser pulses. In: Scientific Reports. 2017, 7(1), 4114. eISSN 2045-2322. Available under: doi: 10.1038/s41598-017-04167-w
BibTex
@article{John2017-12Magne-39652,
  year={2017},
  doi={10.1038/s41598-017-04167-w},
  title={Magnetisation switching of FePt nanoparticle recording medium by femtosecond laser pulses},
  number={1},
  volume={7},
  journal={Scientific Reports},
  author={John, Robin and Berritta, Marco and Hinzke, Denise and Müller, Jakob C. and Santos, Tiffany and Ulrichs, Henning and Nieves, Pablo and Walowski, Jakob and Mondal, Ritwik and Chubykalo-Fesenko, Oksana and McCord, Jeffrey and Oppeneer, Peter M. and Nowak, Ulrich and Münzenberg, Markus},
  note={Article Number: 4114}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/39652">
    <dc:contributor>Chubykalo-Fesenko, Oksana</dc:contributor>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/39652"/>
    <dc:contributor>John, Robin</dc:contributor>
    <dc:creator>Santos, Tiffany</dc:creator>
    <dc:creator>Ulrichs, Henning</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-07-25T09:39:59Z</dc:date>
    <dc:contributor>Berritta, Marco</dc:contributor>
    <dc:creator>Müller, Jakob C.</dc:creator>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Chubykalo-Fesenko, Oksana</dc:creator>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/39652/1/John_0-415582.pdf"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/39652/1/John_0-415582.pdf"/>
    <dcterms:title>Magnetisation switching of FePt nanoparticle recording medium by femtosecond laser pulses</dcterms:title>
    <dc:creator>Walowski, Jakob</dc:creator>
    <dcterms:abstract xml:lang="eng">Manipulation 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.</dcterms:abstract>
    <dc:creator>Hinzke, Denise</dc:creator>
    <dc:creator>Berritta, Marco</dc:creator>
    <dc:contributor>Oppeneer, Peter M.</dc:contributor>
    <dc:creator>Nieves, Pablo</dc:creator>
    <dcterms:issued>2017-12</dcterms:issued>
    <dc:creator>Mondal, Ritwik</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:contributor>Santos, Tiffany</dc:contributor>
    <dc:contributor>Mondal, Ritwik</dc:contributor>
    <dc:contributor>Nieves, Pablo</dc:contributor>
    <dc:contributor>Münzenberg, Markus</dc:contributor>
    <dc:contributor>McCord, Jeffrey</dc:contributor>
    <dc:contributor>Walowski, Jakob</dc:contributor>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-07-25T09:39:59Z</dcterms:available>
    <dc:contributor>Nowak, Ulrich</dc:contributor>
    <dc:creator>Nowak, Ulrich</dc:creator>
    <dc:creator>John, Robin</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/"/>
    <dc:language>eng</dc:language>
    <dc:creator>McCord, Jeffrey</dc:creator>
    <dc:contributor>Hinzke, Denise</dc:contributor>
    <dc:contributor>Müller, Jakob C.</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:contributor>Ulrichs, Henning</dc:contributor>
    <dc:creator>Münzenberg, Markus</dc:creator>
    <dc:creator>Oppeneer, Peter M.</dc:creator>
    <dc:rights>Attribution 4.0 International</dc:rights>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen