Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2006-05-02
2006-05-02
Davis, David (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
07038882
ABSTRACT:
A write pole for a magnetic recording head, such as a perpendicular magnetic recording head, includes a first magnetic layer comprising a material having a first saturation magnetic moment and a second magnetic layer adjacent the first magnetic layer wherein the second magnetic layer comprises a material having a second saturation magnetic moment that is greater than the first saturation magnetic moment. The write pole also comprises a non-magnetic layer between a portion of the first magnetic layer and the second magnetic layer. The non-magnetic layer may be formed between the first magnetic layer and the second magnetic layer adjacent an air-bearing surface of the recording head. A disc drive storage system having a recording head with means for reducing skew sensitivity of the recording head is also disclosed.
REFERENCES:
patent: 4078300 (1978-03-01), Lazzari
patent: 4639810 (1987-01-01), Sakai
patent: 4768121 (1988-08-01), Nakashima et al.
patent: 4803582 (1989-02-01), Sakai
patent: 4858048 (1989-08-01), Hayakawa et al.
patent: 4873599 (1989-10-01), Sueoka
patent: 5073836 (1991-12-01), Gill et al.
patent: 5157570 (1992-10-01), Shukovsky et al.
patent: 5225953 (1993-07-01), Wada et al.
patent: 5606478 (1997-02-01), Chen et al.
patent: 5668689 (1997-09-01), Schultz et al.
patent: 5995341 (1999-11-01), Tanaka et al.
patent: 6101068 (2000-08-01), Ohtomo et al.
patent: 6163442 (2000-12-01), Gill et al.
patent: 6259583 (2001-07-01), Fontana et al.
patent: 6504675 (2003-01-01), Shukh et al.
patent: 6721131 (2004-04-01), Litvinov et al.
patent: 6791796 (2004-09-01), Shukh et al.
patent: 6813115 (2004-11-01), Van der Heijden et al.
Crue Billy W.
Khizroev Sakhrat
Litvinov Dmitri
Rottmayer Robert
Svedberg Erik
Davis David
Pietragallo Bosick & Gordon LLP
Queen, II Benjamin T.
Seagate Technology
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