Method of manufacturing thin film magnetic head having...

Details Method of manufacturing thin film magnetic head having... Method of manufacturing thin film magnetic head having...

2006-07-11

2006-07-11

Kim, Paul D. (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603070, C029S603120, C029S603160, C029S603180, C216S041000, C216S048000, C216S039000, C427S127000, C427S128000, C451S005000, C451S041000

Reexamination Certificate

active

07073250

ABSTRACT:
A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.

REFERENCES:
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patent: 6490127 (2002-12-01), Sasaki
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patent: 11-350171 (1999-12-01), None
patent: 2000-149219 (2000-05-01), None
patent: 2002-8208 (2002-01-01), None
“Thin film magnetic head composed of inorganic materials”; Yoshimizu, H.; Fujisawa, W.; Orihara, S.; Oguri, K.; Magnetics, IEEE Transactions on , vol.: 28 , Issue: 5 , Sep. 1992; pp.:2112-2114.

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