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Thermodynamic behavior of nanomagnets with a vortex configuration

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Nowak77.pdf
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2006

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Wieser, Robert
Usadel, Klaus-Dieter

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-91656
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https://doi.org/10.1103/PhysRevB.74.094410
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Physical Review B. 2006, 74, 94410. Available under: doi: 10.1103/PhysRevB.74.094410

Zusammenfassung

The thermodynamic behavior of flat circular nanomagnets with a vortex domain configuration is studied using Langevin dynamics simulations for the dynamical behavior as well as local mean-field calculations for equilibrium properties. Our studies show that the vortex core becomes thermally unstable with increasing temperature, acting like a superparamagnetic system. On time scales where the vortex core remains within one of the metastable states it still has a stronger temperature dependence than the magnetization far away in the bulk of a domain.

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530 Physik

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ISO 690WIESER, Robert, Klaus-Dieter USADEL, Ulrich NOWAK, 2006. Thermodynamic behavior of nanomagnets with a vortex configuration. In: Physical Review B. 2006, 74, 94410. Available under: doi: 10.1103/PhysRevB.74.094410
BibTex
@article{Wieser2006Therm-9152,
  year={2006},
  doi={10.1103/PhysRevB.74.094410},
  title={Thermodynamic behavior of nanomagnets with a vortex configuration},
  volume={74},
  journal={Physical Review B},
  author={Wieser, Robert and Usadel, Klaus-Dieter and Nowak, Ulrich},
  note={Article Number: 94410}
}
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