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 journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    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
    Volume38
    Issue number2 I
    DOIs
    Publication statusPublished - 2002 Mar

    Keywords

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

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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