The thermodynamic limits of magnetic recording

Richter, H. J.; Lyberatos, Andreas; Nowak, Ulrich; Evans, Richard Francis L.; Chantrell, Roy W.

The thermodynamic limits of magnetic recording

Dateien

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Datum

2012

Autor:innen

Richter, H. J.

Lyberatos, Andreas

Nowak, Ulrich

Evans, Richard Francis L.

Chantrell, Roy W.

Publikationstyp

Zeitschriftenartikel

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Journal of Applied Physics. 2012, 111(3), 033909. ISSN 0021-8979. Available under: doi: 10.1063/1.3681297

Zusammenfassung

Thermal stability of the recorded information is generally thought to set the limit of the maximum possible density in magnetic recording. It is shown that basic thermodynamics always cause the probability of success of the write process to be less than 100%. This leads to a thermally induced error rate, which eventually limits the maximum possible density beyond that given by the traditional thermal stability limit. While the thermally induced error rate is negligible for recording of simple single domain particles, it rapidly increases in the presence of a write assist, in particular if the write assist is accomplished by an increased recording temperature. For the ultimate recording system that combines thermally assisted writing with a recording scheme that uses one grain per bit, the upper bound for the maximum achievable density is 20 Tbit/inch² for a bit error rate target of 10ˉ².

Fachgebiet (DDC)

530 Physik

Schlagwörter

thermodynamic limits, error analysis, magnetic domains, magnetic recording, thermal stability

Zitieren

ISO 690

RICHTER, H. J., Andreas LYBERATOS, Ulrich NOWAK, Richard Francis L. EVANS, Roy W. CHANTRELL, 2012. The thermodynamic limits of magnetic recording. In: Journal of Applied Physics. 2012, 111(3), 033909. ISSN 0021-8979. Available under: doi: 10.1063/1.3681297

BibTex

@article{Richter2012therm-18550,
  year={2012},
  doi={10.1063/1.3681297},
  title={The thermodynamic limits of magnetic recording},
  number={3},
  volume={111},
  issn={0021-8979},
  journal={Journal of Applied Physics},
  author={Richter, H. J. and Lyberatos, Andreas and Nowak, Ulrich and Evans, Richard Francis L. and Chantrell, Roy W.},
  note={Article Number: 033909}
}

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