Effect of head field gradient on transition jitter in perpendicular magnetic recording

Kenji Miura, Hiroaki Muraoka, Yoshihisa Nakamura

Research output: Contribution to journalConference articlepeer-review

32 Citations (Scopus)


Noise of perpendicular double-layered media was investigated in connection with write head field of single pole heads. Time-domain noise measurement revealed that the noise was spatially concentrated around transitions, caused by transition jitter. The influence of writing head field was discussed based on jitter measurement using various heads; a ring head and single pole heads. The amount of transition jitter was inversely proportional to estimated writing head field gradient. The writing head field improvement, thus, contributed to reduce the medium noise.

Original languageEnglish
Pages (from-to)1926-1928
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number4 I
Publication statusPublished - 2001 Jul
Externally publishedYes
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: 2001 Jan 72001 Jan 11


  • Head field gradient
  • Medium noise
  • Perpendicular magnetic recording
  • Transition jitter

ASJC Scopus subject areas

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


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