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Quantitative simulation of temperature-dependent magnetization dynamics and equilibrium properties of elemental ferromagnets

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2015

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Evans, Richard F. L.
Chantrell, Roy W.

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https://doi.org/10.1103/PhysRevB.91.144425
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Physical Review B. 2015, 91(14), 144425. ISSN 1098-0121. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.91.144425

Zusammenfassung

Atomistic spin model simulations are immensely useful in determining temperature-dependent magnetic properties but are known to give the incorrect dependence of the magnetization on temperature compared to experiment owing to their classical origin. We find a single-parameter rescaling of thermal fluctuations which gives quantitative agreement of the temperature-dependent magnetization between atomistic simulations and experiment for the elemental ferromagnets Ni, Fe, Co, and Gd. Simulating the subpicosecond magnetization dynamics of Ni under the action of a laser pulse, we also find quantitative agreement with experiment in the ultrafast regime. This enables the quantitative determination of temperature-dependent magnetic properties, allowing for accurate simulations of magnetic materials at all temperatures.

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ISO 690EVANS, Richard F. L., Unai ATXITIA, Roy W. CHANTRELL, 2015. Quantitative simulation of temperature-dependent magnetization dynamics and equilibrium properties of elemental ferromagnets. In: Physical Review B. 2015, 91(14), 144425. ISSN 1098-0121. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.91.144425
BibTex
@article{Evans2015Quant-31116,
  year={2015},
  doi={10.1103/PhysRevB.91.144425},
  title={Quantitative simulation of temperature-dependent magnetization dynamics and equilibrium properties of elemental ferromagnets},
  number={14},
  volume={91},
  issn={1098-0121},
  journal={Physical Review B},
  author={Evans, Richard F. L. and Atxitia, Unai and Chantrell, Roy W.},
  note={Article Number: 144425}
}
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