Publikation:

Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt

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Ostler_0-258821.pdf
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Datum

2014

Autor:innen

Ostler, Tom A.
Ellis, Matthew O. A.

Herausgeber:innen

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URI (zitierfähiger Link)
http://nbn-resolving.de/urn:nbn:de:bsz:352-0-258821
DOI (zitierfähiger Link)
https://doi.org/10.1103/PhysRevB.90.094402
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Urheberrechtlich geschützt

Angaben zur Forschungsförderung

European Union (EU): 281043

Projekt

FEMTOSPIN - Multiscale Modelling of Femtosecond Spin Dynamics
Open Access-Veröffentlichung
Open Access Green

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Physik: Publikationen
Core Facility der Universität Konstanz

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Published

Erschienen in

Physical Review B. 2014, 90(9), 094402. ISSN 0163-1829. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.90.094402

Zusammenfassung

Using the Landau-Lifshitz-Bloch (LLB) equation for ferromagnetic materials, we derive analytic expressions for temperature-dependent absorption spectra as probed by ferromagnetic resonance. By analyzing the resulting expressions, we can predict the variation of the resonance frequency and damping with temperature and coupling to the thermal bath. We base our calculations on the technologically relevant L10FePt, parametrized from atomistic spin dynamics simulations, with the Hamiltonian mapped from ab initio parameters. By constructing a multimacrospin model based on the LLB equation and exploiting GPU acceleration, we extend the study to investigate the effects on the damping and resonance frequency in μm-sized structures.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

temperature-dependent, ferromagnetic, Landau-Lifshitz-Bloch, FePt

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ISO 690OSTLER, Tom A., Matthew O. A. ELLIS, Denise HINZKE, Ulrich NOWAK, 2014. Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt. In: Physical Review B. 2014, 90(9), 094402. ISSN 0163-1829. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.90.094402
BibTex
@article{Ostler2014Tempe-29327,
  year={2014},
  doi={10.1103/PhysRevB.90.094402},
  title={Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt},
  number={9},
  volume={90},
  issn={0163-1829},
  journal={Physical Review B},
  author={Ostler, Tom A. and Ellis, Matthew O. A. and Hinzke, Denise and Nowak, Ulrich},
  note={Article Number: 094402}
}
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    <dcterms:abstract xml:lang="eng">Using the Landau-Lifshitz-Bloch (LLB) equation for ferromagnetic materials, we derive analytic expressions for temperature-dependent absorption spectra as probed by ferromagnetic resonance. By analyzing the resulting expressions, we can predict the variation of the resonance frequency and damping with temperature and coupling to the thermal bath. We base our calculations on the technologically relevant L1&lt;sub&gt;0&lt;/sub&gt;FePt, parametrized from atomistic spin dynamics simulations, with the Hamiltonian mapped from ab initio parameters. By constructing a multimacrospin model based on the LLB equation and exploiting GPU acceleration, we extend the study to investigate the effects on the damping and resonance frequency in μm-sized structures.</dcterms:abstract>
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