Simulations of magnetic recording in CGC perpendicular media with random pinning sites

A. M. Goodman, Simon John Greaves, Y. Sonobe, Hiroaki Muraoka, Y. Nakamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Coupled granular-continuous (CGC) perpendicular media have been shown to improve thermal stability without compromising SNR. Furthermore, simulations have indicated how CGC media might circumvent conventional limits to areal density by providing a balance of interactions across the bit length that simultaneously increases activation volume and smoothes bit transition irregularity. However, performing a meaningful analysis of media recording performance using the model was hindered by the non-random nature of the irregularity used to demonstrate the effect. We analyze tracks written in CGC media consisting of grains having a random anisotropy constant, Ku, using a 3D micromagnetic model. The thickness of the granular layer, g, and continuous layer, c, are varied whilst maintaining a constant media thickness.

Original languageEnglish
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
DOIs
Publication statusPublished - 2002 Jan 1
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
CountryNetherlands
CityAmsterdam
Period02/4/2802/5/2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

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    Goodman, A. M., Greaves, S. J., Sonobe, Y., Muraoka, H., & Nakamura, Y. (2002). Simulations of magnetic recording in CGC perpendicular media with random pinning sites. In J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, J. De Boeck, & R. Wood (Eds.), INTERMAG Europe 2002 - IEEE International Magnetics Conference [1001162] (INTERMAG Europe 2002 - IEEE International Magnetics Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2002.1001162