Optimum design rule of hysteresis loop for ultrahigh density recording in single-layered perpendicular media

Kyoung Jin Lee, Y. H. Im, N. Y. Park, T. D. Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)


Micromagnetic studies have been performed to find optimum shape of hysteresis loop in a single-layered perpendicular medium for ultrahigh density recording. A good index that was inversely proportional to signal-to-noise ratio (SNR) was developed. By using this index, we found the optimum loop shape should have terms of the ratio of nucleation field to coercivity within -0.4 to -0.6, the loop slope within 2 to 4, and the ratio of grain thickness to grain diameter larger than 2.5.

Original languageEnglish
Pages (from-to)801-804
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number2 I
Publication statusPublished - 2002 Mar 1
Externally publishedYes



  • Hysteresis loop
  • Micromagnetic calculation
  • Perpendicular recording media
  • Signal-to-noise ratio (SNR)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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