Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording

Y. Nonaka; H. Honjo; T. Toba; S. Saito; T. Ishi; M. Saito; N. Ishiwata; K. Ohashi

doi:10.1109/20.908490

Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording

Y. Nonaka^*, H. Honjo, T. Toba, S. Saito, T. Ishi, M. Saito, N. Ishiwata, K. Ohashi

^*この研究の対応する著者

研究成果: Conference article › 査読

9 被引用数 (Scopus)

抄録

We have developed a Co-Ni-Fe write head with a short yoke length for high-speed recording. By reducing the yoke length to 9.5 μm, the eddy currents induced in a yoke with a relatively low resistivity (0.2 μΩm) were reduced. The head of this short yoke had good write performance for a medium with a coercivity of 400 kA/m (5000 Oe) at frequencies up to 250 MHz (the overwrite less than - 30 dB, and nonlinear transition shift less than 7%).

本文言語	English
ページ（範囲）	2514-2516
ページ数	3
ジャーナル	IEEE Transactions on Magnetics
巻	36
号	5 I
DOI	https://doi.org/10.1109/20.908490
出版ステータス	Published - 2000 9月
外部発表	はい
イベント	2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada 継続期間: 2000 4月 9 → 2000 4月 12

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
電子工学および電気工学

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10.1109/20.908490

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title = "Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording",

abstract = "We have developed a Co-Ni-Fe write head with a short yoke length for high-speed recording. By reducing the yoke length to 9.5 μm, the eddy currents induced in a yoke with a relatively low resistivity (0.2 μΩm) were reduced. The head of this short yoke had good write performance for a medium with a coercivity of 400 kA/m (5000 Oe) at frequencies up to 250 MHz (the overwrite less than - 30 dB, and nonlinear transition shift less than 7%).",

keywords = "Eddy currents, High-Bs material, High-speed recording, Short yoke length, Write head",

author = "Y. Nonaka and H. Honjo and T. Toba and S. Saito and T. Ishi and M. Saito and N. Ishiwata and K. Ohashi",

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T1 - Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording

AU - Nonaka, Y.

AU - Honjo, H.

AU - Toba, T.

AU - Saito, S.

AU - Ishi, T.

AU - Saito, M.

AU - Ishiwata, N.

AU - Ohashi, K.

PY - 2000/9

Y1 - 2000/9

N2 - We have developed a Co-Ni-Fe write head with a short yoke length for high-speed recording. By reducing the yoke length to 9.5 μm, the eddy currents induced in a yoke with a relatively low resistivity (0.2 μΩm) were reduced. The head of this short yoke had good write performance for a medium with a coercivity of 400 kA/m (5000 Oe) at frequencies up to 250 MHz (the overwrite less than - 30 dB, and nonlinear transition shift less than 7%).

AB - We have developed a Co-Ni-Fe write head with a short yoke length for high-speed recording. By reducing the yoke length to 9.5 μm, the eddy currents induced in a yoke with a relatively low resistivity (0.2 μΩm) were reduced. The head of this short yoke had good write performance for a medium with a coercivity of 400 kA/m (5000 Oe) at frequencies up to 250 MHz (the overwrite less than - 30 dB, and nonlinear transition shift less than 7%).

KW - Eddy currents

KW - High-Bs material

KW - High-speed recording

KW - Short yoke length

KW - Write head

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Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording

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