Linear and elliptical magnetization reversal close to the Curie temperature

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2009
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Kazantseva, Natalia
Chantrell, Roy W.
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epl. 2009, 86, 27006. Available under: doi: 10.1209/0295-5075/86/27006
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For further improvement of magnetic information storage density and writing speed, laser-induced writing procedures have been extensively explored recently. Within the framework of the Landau-Lifshitz-Bloch equation of motion, which does not conserve the length of the magnetization vector, we investigate thermally assisted switching analytically. We show that for temperatures close to (but still below) the Curie temperature two reversal modes appear, an elliptical mode and a linear one. We calculate the coercive fields and energy barriers for both elliptical and linear switching. Investigating the dynamics of linear reversal, which is the more relevant case close to the Curie temperature, we calculate the temperature dependence of the minimal time and field needed for thermally assisted switching below and above the Curie temperature.

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530 Physik
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Linear and elliptical magnetization reversal close to the Curietemperature Spin Dynamic
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ISO 690KAZANTSEVA, Natalia, Denise HINZKE, Roy W. CHANTRELL, Ulrich NOWAK, 2009. Linear and elliptical magnetization reversal close to the Curie temperature. In: epl. 2009, 86, 27006. Available under: doi: 10.1209/0295-5075/86/27006
BibTex
@article{Kazantseva2009Linea-9035,
  year={2009},
  doi={10.1209/0295-5075/86/27006},
  title={Linear and elliptical magnetization reversal close to the Curie temperature},
  volume={86},
  journal={epl},
  author={Kazantseva, Natalia and Hinzke, Denise and Chantrell, Roy W. and Nowak, Ulrich},
  note={Article Number: 27006}
}
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