Method of forming a CPP magnetic recording head with a...

Details Method of forming a CPP magnetic recording head with a... Method of forming a CPP magnetic recording head with a...

2008-04-15

2008-04-15

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603130, C029S603190, C216S022000, C216S065000, C360S122000, C360S125330, C360S317000, C427S127000, C427S128000, C451S005000, C451S041000

Reexamination Certificate

active

10953085

ABSTRACT:
A method is provided for forming a CPP MTJ or GMR read sensor in which the free layer is self-stabilized by a magnetization in a circumferential vortex configuration. This magnetization permits the pinned layer to be magnetized in a direction parallel to the ABS plane, which thereby makes the pinned layer directionally more stable as well. The lack of lateral horizontal bias layers or in-stack biasing allows the formation of closely configured shields, thereby providing protection against side-reading. The vortex magnetization is accomplished by first magnetizing the free layer in a uniform vertical field, then applying a vertical current while the field is still present.

REFERENCES:
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patent: 6680832 (2004-01-01), Fontana, Jr. et al.
patent: 7072208 (2006-07-01), Min et al.
patent: 2005/0276099 (2005-12-01), Horng et al.

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