Probable capacity of 3.5-inch magneto-optical disk using trilayer double-mask magnetically induced super-resolution media

Tetsu Tanaka, M. Mihara, K. Tamanoi, T. Sugimoto, K. Shono

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This paper discusses the probable capacity of 3.5-in magneto-optical (MO) disks using trilayer double-mask magnetically induced super resolution (MSR) media and a conventional optical system. We measured the bit error rate of the double-mask MSR media on a land/groove substrate with a track pitch of 0.6 μm. We obtained bit error rates as low as le-7 for a minimum bit length of 0.24 μm. The recording power margin was ±11.3% and the tilt margin was ±0.7°. These results indicate that a capacity of over 2.4 GB is possible for a 3.5-in MO disk using an optical head with a 685-nm laser diode having a lens numerical aperture of 0.55. The capacity corresponds to an areal density of 4.48 Gbit/in2.

Original languageEnglish
Pages (from-to)580-582
Number of pages3
JournalIEEE Transactions on Magnetics
Volume35
Issue number1 PART 2
Publication statusPublished - 1999 Dec 1
Externally publishedYes

Keywords

  • 3.5 inch
  • Double mask
  • Land/groove
  • Magnetically induced super resolution
  • Magneto optical
  • Rear aperture detection
  • Trilayer

ASJC Scopus subject areas

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

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