Influence of magnetic cluster size distribution on SNR and bit error rate in perpendicular magnetic recording

Mitsuhiro Hashimoto, Kenji Miura, Hiroaki Muraoka, Hajime Aoi, Yoshihisa Nakamura

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The bit error rate (BER) and signal-to-noise ratio (SNR) of perpendicular recording media were investigated with a software channel and magnetic clustering based microstructure model of irregular magnetization transitions. The calculations show that the BER is not only determined by the mean cluster size, but also by the fractional standard deviation, as is the SNR. However, the BER performance does not correlate well with the SNR. Reducing the cluster size distribution is more effective at improving the BER than the SNR. An explanation for this discrepancy can be found by considering the distribution of transition position fluctuations and transition percolation.

Original languageEnglish
Pages (from-to)123-127
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume287
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2005 Feb

Keywords

  • Cluster size distribution
  • Error rate performance
  • Perpendicular magnetic recording
  • Transition percolation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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