Write performance of heads with a 2.1-tesla conife pole

Keishi Ohashi; Noboru Morita; Tadaaki Tsuda; Yoshihiro Nonaka

doi:10.1109/20.800883

Write performance of heads with a 2.1-tesla conife pole

Keishi Ohashi, Noboru Morita, Tadaaki Tsuda, Yoshihiro Nonaka

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

We examined the write performance of heads with a CoNiFe /NiFe composite write pole. The saturation induction B_s 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 B_s 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 language	English
Pages (from-to)	2538-2540
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 PART 1
DOIs	https://doi.org/10.1109/20.800883
Publication status	Published - 1999 Dec 1
Externally published	Yes

Keywords

High bs material
Overwrite
Soft magnetic material
Write head

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.800883

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abstract = "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).",

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AU - Ohashi, Keishi

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AU - Tsuda, Tadaaki

AU - Nonaka, Yoshihiro

PY - 1999/12/1

Y1 - 1999/12/1

N2 - 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).

AB - 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).

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KW - Soft magnetic material

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Write performance of heads with a 2.1-tesla conife pole

Abstract

Keywords

ASJC Scopus subject areas

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