Analytical expressions for shielded MR head response

H. Muraoka, Y. Nakamura

Research output: Contribution to journalArticlepeer-review


Recording mechanism of perpendicular recording was examined using analytical expression of shielded AMR/GMR head response. Pulse shape, roll-off performance, and noise spectra were reasonably explained by the calculated head transfer functions. Comparison with the calculation based on the formulae showed several fundamental characteristics of perpendicular recording: no large media noise at low frequencies in magnetic sense, but simply due to a reflection of a head transfer function: no severe resolution degradation: negligible noise power directly arisen from soft magnetic underlayer. This method will provide a convenient design tool for perpendicular magnetic recording.

Original languageEnglish
Pages (from-to)1165-1170
Number of pages6
JournalIEICE Transactions on Electronics
Issue number9
Publication statusPublished - 2001 Sep


  • Perpendicular recording
  • Reciprocity calculation
  • Shielded MR head

ASJC Scopus subject areas

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


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