Intermediate layer thickness dependence on switching field distribution in perpendicular recording media

R. Sbiaa*, R. Gandhi, K. Srinivasan, S. N. Piramanayagam, R. M. Seoh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The effect of intermediate layer (IL) thickness on crystallographic texture and magnetic properties of CoCrPtSiO2 granular perpendicular recording media was investigated with switching field distribution (SFD) as the focus. Even though the c-axis orientation of the Co-based recording layer (RL) broadens with the reduction of IL thickness, the SFD becomes narrower. This result demonstrates that the intrinsic SFD is not directly dependent on c-axis orientation of the recording layer but instead dependent on the magnitude of exchange coupling. It is thus possible to have a medium with thin IL and narrow SFD. This is desirable for bit-patterned media (BPM), where highly exchange-coupled grains are required.

Original languageEnglish
Pages (from-to)2682-2684
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume321
Issue number17
DOIs
Publication statusPublished - Sep 2009

Keywords

  • Intermediate layer
  • Perpendicular recording media
  • Switching field distribution

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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