Nanoscale bit-patterned media for next generation data storage systems

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

Research output: Contribution to journalReview articlepeer-review

3 Scopus citations

Abstract

Recording physics, design considerations, fabrication, and characterization 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. 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)93-112
Number of pages20
JournalJournal of Nanoelectronics and Optoelectronics
Volume3
Issue number2
DOIs
StatePublished - Jul 2008
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

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

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