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  • An approach for the investigation of vortex core switching is presented. Thermal effects up to the Curie point are included in a micromagnetic framework based on the recently developed Landau-Lifshitz-Bloch equation. In this approach it is easier to avoid numerical discretization artifacts, commonly present when a Bloch point is mediating the switching process. Switching in thin circular permalloy disks caused by the application of a slowly increasing magnetic field oriented orthogonally to the disk is considered. An energy barrier which can be overcome by thermal fluctuations is taken into account, leading to a strong influence of the temperature on the switching field.Inparticular,the switching field goes to zero at a significantly smaller temperature than the Curie temperature. The deduced nucleation volume is smaller than the typical grain size in permalloy.
  • An approach for the investigation of vortex core switching is presented. Thermal effects up to the Curie point are included in a micromagnetic framework based on the recently developed Landau-Lifshitz-Bloch equation. In this approach it is easier to avoid numerical discretization artifacts, commonly present when a Bloch point is mediating the switching process. Switching in thin circular permalloy disks caused by the application of a slowly increasing magnetic field oriented orthogonally to the disk is considered. An energy barrier which can be overcome by thermal fluctuations is taken into account, leading to a strong influence of the temperature on the switching field.Inparticular,the switching field goes to zero at a significantly smaller temperature than the Curie temperature. The deduced nucleation volume is smaller than the typical grain size in permalloy. (en)
Title
  • Ferromagnetic vortex core switching at elevated temperatures
  • Ferromagnetic vortex core switching at elevated temperatures (en)
skos:prefLabel
  • Ferromagnetic vortex core switching at elevated temperatures
  • Ferromagnetic vortex core switching at elevated temperatures (en)
skos:notation
  • RIV/61989100:27740/14:86092769!RIV15-MSM-27740___
http://linked.open...avai/riv/aktivita
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  • P(EE2.3.30.0055)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
  • Lebecki, Krzysztof Jaromir
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  • 16669
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  • RIV/61989100:27740/14:86092769
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  • Reversal; Excitation (en)
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http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [23AF9FDDFB19]
http://linked.open...i/riv/nazevZdroje
  • Physical Review B
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http://linked.open...v/svazekPeriodika
  • 89
http://linked.open...iv/tvurceVysledku
  • Lebecki, Krzysztof Jaromir
  • Nowak, Ulrich
issn
  • 1098-0121
number of pages
http://bibframe.org/vocab/doi
  • 10.1103/PhysRevB.89.014421
http://localhost/t...ganizacniJednotka
  • 27740
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