Nanoscale bit-patterned media for next generation magnetic data storage applications

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Design considerations and fabrication of bit-patterned magnetic recording media are presented. The application of ion-beam proximity printing, a high-throughput direct-write lithography, to media patterning is evaluated. Ultra-high magnetic anisotropy (Co/Pd)N magnetic multilayers are analyzed as candidates for patterned recording layers. Following patterning, optimized multilayers are shown to exhibit coercivity values well in excess of 14kOe. It is found that the magnetization reversal in patterned bits takes place via domain wall nucleation and propagation. The nucleation field and the location of the nucleation site strongly depend on the bit edge imperfections and contribute to finite switching field distribution. Playback off a bit-patterned media using various magnetic reader designs is analyzed using reciprocity theory.

Original languageEnglish (US)
Title of host publication2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings
Pages395-398
Number of pages4
DOIs
StatePublished - 2007
Externally publishedYes
Event2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007 - Hong Kong, China
Duration: Aug 2 2007Aug 5 2007

Publication series

Name2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings

Other

Other2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007
Country/TerritoryChina
CityHong Kong
Period8/2/078/5/07

Keywords

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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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