Patent · US Active

Magnetic write head having a wrap around trailing shield with an asymetrical side gap

US8339734B2 · kind B2 · utility

13Cited by

4References

6Claims

0Family size

Assignee

Hitachi Global Storage Technologies Netherlands B.V. · NL

Inventors

Aron Pentek · San Jose, US
Yi Zheng · San Ramon, US

Key dates

Filing date	Apr 23, 2010
Grant date	Dec 25, 2012
Priority date	—
Expiry date	Feb 10, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/3163
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic write head having a magnetic write pole with a wrap around magnetic trailing shield. The wrap around magnetic trailing shield is separated by a first non-magnetic side gap at a first side of the write pole and by a second non-magnetic side gap at a second side of the write pole. The first second non-magnetic side gap is larger than the first non-magnetic side gap and is preferably at least twice the thickness of the first non-magnetic side gap. This design provides additional protection adjacent track interference at one side of the write pole and additional protection against magnetic write field loss at the other side of the write pole.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.