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CPP-GMR reader and wraparound shield writer for perpendicular recording

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10 Author(s)
K. Nakamoto ; Storage Technol. Res. Center, Hitachi Ltd., Kanagawa, Japan ; H. Hoshiya ; T. Okada ; H. Katada
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Current perpendicular-to-plane-giant magnetoresistance (CPP-GMR) read heads with 80 nm sensor width and wraparound shielded write heads with 150 nm pole width are fabricated and tested. A perpendicular medium of 6.2 kOe coercivity and 520 emu/cm3 is used for read-write testing. Both wraparound shield and unshielded write heads show a similar overwrite performance of about 40 dB. Half-widths of the heads were almost the same, but the 10% amplitude width of the shielded head was slightly narrower by 20 nm than the unshielded one.

Published in:

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.

Date of Conference:

4-8 April 2005