Write performance of heads with a 2.1-tesla conife pole

Keishi Ohashi*, Noboru Morita, Tadaaki Tsuda, Yoshihiro Nonaka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


We examined the write performance of heads with a CoNiFe /NiFe composite write pole. The saturation induction Bs of the CoNiFe film was 2.1 T (21 kG). The CoNiFe layer thickness was typically 0.5-0.6 μm; and the rest of the write pole was composed of Ni80Fe20. The dual high Bs layer structure with the CoNiFe films on both sides of the write gap gave excellent overwrite performance. It was over 30 dB for a medium that had a high coercivity of 560 kA/m (7.0 kOe).

Original languageEnglish
Pages (from-to)2538-2540
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 PART 1
Publication statusPublished - 1999
Externally publishedYes


  • High bs material
  • Overwrite
  • Soft magnetic material
  • Write head

ASJC Scopus subject areas

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


Dive into the research topics of 'Write performance of heads with a 2.1-tesla conife pole'. Together they form a unique fingerprint.

Cite this