Disc drive having electromagnetic biased shieldless CPP reader

Details Disc drive having electromagnetic biased shieldless CPP reader Disc drive having electromagnetic biased shieldless CPP reader

2006-01-10

2006-01-10

Evans, Jefferson (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S324200, C360S236300

Reexamination Certificate

active

06985339

ABSTRACT:
A head slider moveable relative to a storage media having a storage layer is disclosed. The disc head slider comprises a read head formed on the head slider, and comprises a first electrical contact layer adapted to carry a sensor current, a second electrical contact layer adapted to carry the sensor current, a read sensor and a bias magnet. The read sensor is configured to carry the sense current perpendicular to plane. The read sensor also has a top sensor edge, and has a bottom sensor edge aligned with the air-bearing surface to access data in the storage disc. The bias magnet magnetically biases the read sensor. Further, the first and second electrical contact layers are made of a material that does not magnetically shield the read sensor.

REFERENCES:
patent: 6157525 (2000-12-01), Iwasaki et al.
patent: 6333842 (2001-12-01), Nobuyuki et al.
patent: 6369993 (2002-04-01), Hayashi
patent: 6529353 (2003-03-01), Shimazawa
patent: 6671141 (2003-12-01), Shimazawa et al.
patent: 6747853 (2004-06-01), Hayashi et al.
patent: 6785092 (2004-08-01), Covington et al.
patent: 6795280 (2004-09-01), Song et al.
patent: 6801410 (2004-10-01), Xue et al.
patent: 6847509 (2005-01-01), Yoshikawa et al.
patent: 2001/0040777 (2001-11-01), Watanabe et al.
patent: 2004/0042126 (2004-03-01), Watanabe et al.
Tsang, C., “Unshielded MR Elements With Patterned Exchange-Biasing”, IEEE Transaction Of Magnetics, vol. 25, No. 5, Sep. 1989.
Takano et al., Ken-ichi, “Resolution of Unshielded and Shielded MR Heads For Perpendicular Magnetic Recording”, Journal of Magnetism and Magnetic Materials, 1997.

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