Recording physics, design considerations, and fabrication of nanoscale bit-patterned media

Dmitri Litvinov, Vishal Parekh, E. Chunsheng, Darren Smith, James Owen Rantschler, Paul Ruchhoeft, Dieter Weller, Sakhrat Khizroev

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Recording physics, design considerations, and fabrication of bit-patterned magnetic medium for next generation data storage systems is presented. (Co/Pd)N magnetic multilayers are evaluated as candidates for bit-patterned medium recording layer materials for their high and easily tunable magnetic anisotropy. The optimized patterned multilayers used in this study had coercivities in excess of 12-14 kOe. Bit patterning was accomplished using ion-beam proximity printing, a high-throughput direct write lithography where a large array of ion beamlets shaped by a stencil mask is used to write an arbitrary device pattern. It is found that the nature of magnetization reversal strongly depends on bit edge imperfections and is likely to contribute to switching field distribution.

Original languageEnglish (US)
Pages (from-to)463-476
Number of pages14
JournalIEEE Transactions on Nanotechnology
Volume7
Issue number4
DOIs
StatePublished - Jul 2008
Externally publishedYes

Keywords

  • Magnetic data storage
  • Nanomagnetic arrays
  • Patterned medium
  • Recording physics

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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