Effects of nitrogen addition to the CoCr recording layer of a double layered perpendicular rigid disk

Y. Sano, H. Muraoka, I. Watanabe, Y. Nakamura

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Increase of the coercive force (Hc) and narrowing of the coercive force distribution (Δ Hc) was observed on double layered perpendicular rigid disks which were prepared by adding a small quantity of N2 during CoCr layer sputtering deposition. The effects of the N2 addition gave rise to an increase of output signal and D50. This change of recording property with N2 addition is due to narrow dispersion and reduction of CoCr grain diameter as measured by atomic force microscopy (AFM). But medium noise which was caused by magnetic inhomogeneity was also enhanced. Furthermore expansion of the domain size was found at the de-erased state by magnetic force microscopy (MFM).

Original languageEnglish
Pages (from-to)212-215
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume155
Issue number1-3
DOIs
Publication statusPublished - 1996 Jan 1
EventProceedings of the 1995 6th International Conference on Magnetic Recording Media, MRM - Oxford, UK
Duration: 1995 Jul 161995 Jul 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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