Patent · US Active

Perpendicular magnetic write head having a trailing wrap-around magnetic shield magnetically biased in a cross track direction

US8537496B2 · kind B2 · utility

1Cited by

13References

8Claims

0Family size

Assignee

HGST Netherlands, B.V. · NL

Inventors

Zhihao Li · Qingdao, CN
Xiaodong Che · Saratoga, US
Zhen Jin · Fremont, US
Yansheng Luo · Fremont, US

Key dates

Filing date	Jul 27, 2010
Grant date	Sep 17, 2013
Priority date	—
Expiry date	Jun 26, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/315
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A perpendicular magnetic write head having improved Bit Error Rate (BER), Adjacent Track Interference (ATI) and Far Track Interference (FTI). The write head includes a write pole and a trailing wrap-around magnetic shield. A permanent magnetic is located at either outer side of the shield. These magnets are magnetized to have magnetizations that are oriented in the same direction, in a direction that is perpendicular to the track direction and parallel with the air bearing surface.

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