CPP-GMR reader and wraparound shield writer for perpendicular recording

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/cm/sup 3/ is used for read-write testing. Both wraparound...

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Bibliographic Details
Published inINTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005 pp. 789 - 790
Main Authors Nakamoto, K., Hoshiya, H., Okada, T., Katada, H., Hatatani, M., Hoshino, K., Yoshida, N., Nunokawa, I., Etoh, K., Watanabe, K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Coercive force
Electrical resistance measurement
Magnetic confinement
Magnetic heads
Magnetization
Perpendicular magnetic recording
Signal to noise ratio
Testing
Thermal stability
Voltage
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Summary: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/cm/sup 3/ 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.
ISBN:9780780390096
0780390091
ISSN:2150-4598
2150-4601
DOI:10.1109/INTMAG.2005.1463823