New high field single-pole head design with an ultra-fine coil

K. Yamakawa, K. Ise, K. Ouchi, K. Sagae, H. Muraoka, H. Aoi, Y. Nakamura

Research output: Contribution to journalArticlepeer-review


Improvement in head field of single-pole heads was investigated in terms of coil design. From a simple analysis on hollow cylinder-shaped coil, a quite strong field was found to be created for the coil with inner diameter less than 100 nm. According to this result, a new single-pole head having an ultra-fine coil at its main-pole tip was proposed. The field calculation with FEM showed the new head designed for 1 Tbit/in2 exhibited a strong field larger than 30 kOe owing to enhancement of coil field. Furthermore, a sub-return yoke placed close to the main pole improved head field gradient.

Original languageEnglish
Pages (from-to)367-371
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Issue numberSPEC. ISS.
Publication statusPublished - 2005 Feb


  • Coil
  • Field gradient
  • Field strength
  • Single-pole head

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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