Nanoscale recording transducer for perpendicular magnetic recording

R. Chomko, D. Litvinov, Sakhrat Khizroev

Research output: Contribution to journalArticlepeer-review

Abstract

A study of a perpendicular magnetic recording transducer with the potential to be utilized at areal densities above 1 Tbit in.2 is presented. Focused ion beam etching is used to fabricate the transducer via trimming of a regular nanoslider ring head from an air bearing surface. The transducer is compared with a regular ring-type head. With spinstand experiments, it is demonstrated that the overlapping width determines the effective trackwidth in the case of the transducer. With other conditions equal, the transducer indicates substantially higher efficiency. The saturation current values for the transducer and the ring head are measured to be above 350 and 800 mA turn, respectively. The performance of the transducer is tested with two types of perpendicular recording media, with and without a soft underlayer, respectively. The experiments indicate that, contrary to the common belief, the medium without a soft underlayer demonstrates the potential for achieving substantially higher areal densities.

Original languageEnglish (US)
Article number162503
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number16
DOIs
StatePublished - Oct 17 2005

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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