Evaluation of inter-granular coupling in stacked perpendicular recording media

K. K. Tham, D. Hasegawa, N. Itagaki, Shintaro Hinata, S. Ishibashi, S. Saito, Migaku Takahashi

Research output: Contribution to journalConference article

Abstract

The trial for quantitative evaluation of inter-granular coupling in stacked perpendicular recording media is reported. The evaluation is realized by analyzing magnetic domain in relation with microstructure of the cap layer initial growth layer. When the thickness of cap layer is increased, the change of magnetic domain from single magnetic domain to maze magnetic domain can be observed. The critical thickness of the cap layer where the change happened was around 5.1 nm. According to this analysis, when granular layer and cap layer of stacked media are assumed to be single layer, inter-granular coupling with amount of around 2.9 erg/cm2 was obtained which agrees with the simulation result qualitatively.

Original languageEnglish
Pages (from-to)42-47
Number of pages6
JournalPhysics Procedia
Volume16
DOIs
Publication statusPublished - 2011 Jan 1
Event9th Perpendicular Magnetic Recording Conference, PMRC 2010 - Sendai, Japan
Duration: 2011 May 172011 May 19

Keywords

  • Cap layer
  • Energy barrier
  • Granular layer
  • Initial growth layer
  • Inter-granular coupling
  • Magnetic domain
  • Stacked media

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Tham, K. K., Hasegawa, D., Itagaki, N., Hinata, S., Ishibashi, S., Saito, S., & Takahashi, M. (2011). Evaluation of inter-granular coupling in stacked perpendicular recording media. Physics Procedia, 16, 42-47. https://doi.org/10.1016/j.phpro.2011.06.105