Method of protecting the pole piece of a magnetic head...

Details Method of protecting the pole piece of a magnetic head... Method of protecting the pole piece of a magnetic head...

2005-02-01

2005-02-01

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603070, C029S603130, C029S603150, C029S603170, C205S119000, C205S122000, C205S192000, C360S125330, C360S122000, C360S125330, C451S005000, C451S041000

Reexamination Certificate

active

06848166

ABSTRACT:
A method of making a magnetic head which protects the front P2pole tip during the ion mill patterning of the yoke is described. A front connecting pedestal is electroplated over the front P2pole tip slightly behind the ABS, and a back gap connecting pedestal is electroplated over the back gap P2pedestal. Insulator materials are formed over the front P2pole tip, over the front connecting pedestal, and in between the front and the back gap connecting pedestals. Next, a chemical-mechanical polishing (CMP) is performed over the top of the structure to form a substantially planar top surface. A full-film of yoke layer materials is then sputter deposited over this top surface, followed by the formation of a photoresist mask slightly behind the ABS. When the yoke layer materials are subsequently ion milled to form the yoke, the front P2pole tip is protected by the surrounding insulator.

REFERENCES:
patent: 5155646 (1992-10-01), Fujisawa et al.
patent: 5473491 (1995-12-01), Fujisawa et al.
patent: 06004830 (1994-01-01), None
“High-performance writer using high-moment sputtered films in top and bottom poles”; Yingjian Chen; Liu, F.; Stoev, K.; Xiaozhong Dang; Hua-Ching Tong; Qing He; Yiming Huai; IEEE Transactions on, vol.: 38, Issue: 5, Sep. 2002; pp. 2222-2224.

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