Fabrication, writing, and reading of 10 Gbits/in2 longitudinal quantized magnetic disks with a switching field over 1000 Oe

Linshu Kong, Lei Zhuang, Mingta Li, Bo Cui, Stephen Y. Chou

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Quantized magnetic disks (QMDs) with a density of 10 Gbits/in2 were fabricated using nanoimprint lithography and a lift-off process. Each bit in the QMD consists of a patterned single domain Co bar with a length of 200 nm, a width of 60 nm, and a bar spacing of 130 nm. Magnetic force microscope (MFM) was used to write and read the QMD. In 2.5 μm×2.5μm MFM window, error-free MFM writing has been achieved, even though there is no feedback control of the writing tip position and the Co bars switching field was as high as 1020 Oe.

Original languageEnglish (US)
Pages (from-to)5973-5975
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number11
DOIs
StatePublished - Nov 1998

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Keywords

  • Magnetic force microscope
  • Nanoimprint lithography
  • Quantized magnetic disk
  • Single domain
  • Switching field

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