Spin dynamics of magnetic nanoparticles : Beyond Brown s theory

Kurzanzeige
dc.contributor.authorNowak, Ulrich
dc.contributor.authorMryasov, Oleg N.deu
dc.contributor.authorWieser, Robertdeu
dc.contributor.authorGuslienko, Konstantindeu
dc.contributor.authorChantrell, Roy W.deu
dc.date.accessioned2011-03-24T17:54:44Zdeu
dc.date.available2011-03-24T17:54:44Zdeu
dc.date.issued2005deu
dc.description.abstractAn investigation of thermally induced spin dynamics of magnetic nanoparticles is presented. We use an atomistic model for the magnetic interactions within an effective, classical spin Hamiltonian constructed on the basis of first-principles calculations for L1 0 FePt. Using Langevin dynamics we investigate how the internal degrees of freedom affect the switching behavior at elevated temperatures. We find significant deviations from a single-spin model, arising from the temperature dependence of the intrinsic properties, from longitudinal magnetization fluctuations, and from both thermal and athermal finite-size effects. These findings underline the importance of atomistic simulations for the understanding of fast magnetization dynamics.eng
dc.description.versionpublished
dc.format.mimetypeapplication/pdfdeu
dc.identifier.citationFirst publ. in: Physical Review B 72 (2005), 172410deu
dc.identifier.doi10.1103/PhysRevB.72.172410
dc.identifier.ppn313195218deu
dc.identifier.urihttp://kops.uni-konstanz.de/handle/123456789/9231
dc.language.isoengdeu
dc.legacy.dateIssued2009deu
dc.rightsterms-of-usedeu
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/deu
dc.subject.ddc530deu
dc.subject.pacs75.50.Ssdeu
dc.subject.pacs75.10.Hkdeu
dc.subject.pacs75.75.+adeu
dc.subject.pacs75.20.-gdeu
dc.titleSpin dynamics of magnetic nanoparticles : Beyond Brown s theoryeng
dc.typeJOURNAL_ARTICLEdeu
dspace.entity.typePublication
kops.citation.bibtex
@article{Nowak2005dynam-9231,
  year={2005},
  doi={10.1103/PhysRevB.72.172410},
  title={Spin dynamics of magnetic nanoparticles : Beyond Brown s theory},
  volume={72},
  journal={Physical Review B},
  author={Nowak, Ulrich and Mryasov, Oleg N. and Wieser, Robert and Guslienko, Konstantin and Chantrell, Roy W.},
  note={Article Number: 172410}
}
kops.citation.iso690NOWAK, Ulrich, Oleg N. MRYASOV, Robert WIESER, Konstantin GUSLIENKO, Roy W. CHANTRELL, 2005. Spin dynamics of magnetic nanoparticles : Beyond Brown s theory. In: Physical Review B. 2005, 72, 172410. Available under: doi: 10.1103/PhysRevB.72.172410deu
kops.citation.iso690NOWAK, Ulrich, Oleg N. MRYASOV, Robert WIESER, Konstantin GUSLIENKO, Roy W. CHANTRELL, 2005. Spin dynamics of magnetic nanoparticles : Beyond Brown s theory. In: Physical Review B. 2005, 72, 172410. Available under: doi: 10.1103/PhysRevB.72.172410eng
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kops.sourcefield.plainPhysical Review B. 2005, 72, 172410. Available under: doi: 10.1103/PhysRevB.72.172410eng
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