Dependence of magnetization reversal on the crystallite size in MnBi thin films : Experiment, theory, and computer simulation

Lade...
Vorschaubild
Dateien
Nowak_1996_DependenceMagnetization.pdf
Nowak_1996_DependenceMagnetization.pdfGröße: 71.2 KBDownloads: 278
Datum
1996
Autor:innen
Fumagalli, Paul
Güntherodt, Gernot
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Open Access Green
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Physical Review B. 1996, 54(18), pp. 13017-13019. Available under: doi: 10.1103/PhysRevB.54.13017
Zusammenfassung

A micromagnetic model is proposed to explain the magnetization reversal of thermally evaporated MnBi thin films. The model assumes that the films consist of grains on a square lattice with perpendicular magnetic anisotropy. In order to describe the magnetic reversal of a particular grain, dipole coupling, wall energy, Zeeman energy, and an energy barrier for the reversal of a single grain are taken into account. Disorder is included by random fluctuations of the lateral grain size in the Zeeman-energy term. The simulation is carried out by using a Monte Carlo method. The experimentally observed decrease in coercivity with increasing film thickness is accurately described by the model and can be explained by an increase in lateral grain size. The asymmetry of the slope of the hysteresis curve of thicker MnBi films can be understood in terms of disorder. In the presence of fluctuations in grain size, large grains reverse more easily than small ones leading to an asymmetry of the slope of the hysteresis curve.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690NOWAK, Ulrich, Ulrich RÜDIGER, Paul FUMAGALLI, Gernot GÜNTHERODT, 1996. Dependence of magnetization reversal on the crystallite size in MnBi thin films : Experiment, theory, and computer simulation. In: Physical Review B. 1996, 54(18), pp. 13017-13019. Available under: doi: 10.1103/PhysRevB.54.13017
BibTex
@article{Nowak1996Depen-5043,
  year={1996},
  doi={10.1103/PhysRevB.54.13017},
  title={Dependence of magnetization reversal on the crystallite size in MnBi thin films : Experiment, theory, and computer simulation},
  number={18},
  volume={54},
  journal={Physical Review B},
  pages={13017--13019},
  author={Nowak, Ulrich and Rüdiger, Ulrich and Fumagalli, Paul and Güntherodt, Gernot}
}
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/123456789/5043">
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/5043/1/Nowak_1996_DependenceMagnetization.pdf"/>
    <dcterms:bibliographicCitation>First publ. in: Physical Review B 54 (1996), 18, pp. 13017-13019</dcterms:bibliographicCitation>
    <dc:creator>Güntherodt, Gernot</dc:creator>
    <dc:creator>Nowak, Ulrich</dc:creator>
    <dcterms:title>Dependence of magnetization reversal on the crystallite size in MnBi thin films : Experiment, theory, and computer simulation</dcterms:title>
    <dc:rights>terms-of-use</dc:rights>
    <dcterms:abstract xml:lang="eng">A micromagnetic model is proposed to explain the magnetization reversal of thermally evaporated MnBi thin films. The model assumes that the films consist of grains on a square lattice with perpendicular magnetic anisotropy. In order to describe the magnetic reversal of a particular grain, dipole coupling, wall energy, Zeeman energy, and an energy barrier for the reversal of a single grain are taken into account. Disorder is included by random fluctuations of the lateral grain size in the Zeeman-energy term. The simulation is carried out by using a Monte Carlo method. The experimentally observed decrease in coercivity with increasing film thickness is accurately described by the model and can be explained by an increase in lateral grain size. The asymmetry of the slope of the hysteresis curve of thicker MnBi films can be understood in terms of disorder. In the presence of fluctuations in grain size, large grains reverse more easily than small ones leading to an asymmetry of the slope of the hysteresis curve.</dcterms:abstract>
    <dcterms:issued>1996</dcterms:issued>
    <dc:contributor>Güntherodt, Gernot</dc:contributor>
    <dc:creator>Rüdiger, Ulrich</dc:creator>
    <dc:contributor>Fumagalli, Paul</dc:contributor>
    <dc:language>eng</dc:language>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:52:41Z</dc:date>
    <dc:contributor>Nowak, Ulrich</dc:contributor>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:52:41Z</dcterms:available>
    <dc:creator>Fumagalli, Paul</dc:creator>
    <dc:contributor>Rüdiger, Ulrich</dc:contributor>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:format>application/pdf</dc:format>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/5043"/>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/5043/1/Nowak_1996_DependenceMagnetization.pdf"/>
  </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
Nein
Begutachtet
Diese Publikation teilen