Magnetic write head manufactured by an enhanced damascene process producing a tapered write pole with a non-magnetic spacer and non-magnetic bump

US8547660B2 · kind B2 · utility

Assignee

• HGST Netherlands, B.V. · NL

Inventors

• Donald G. Allen · Franklin, US
• Amanda Baer · Campbell, US
• Yingjian Chen · Fremont, US
• Andrew Chiu · San Jose, US
• Liubo Hong · San Jose, US
• Wen-Chien David Hsiao · San Jose, US
• Edward Hin Pong Lee · San Jose, US
• Fenglin Liu · Milpitas, US
• Aron Pentek · San Jose, US
• Katalin Pentek · San Jose, US
• Kyusik Shin · Pleasanton, US
• Yi Zheng · San Ramon, US
• Qiping Zhong · Cupertino, US
• Honglin Zhu · Fremont, US

Key dates

• Filing date: Dec 17, 2009
• Grant date: Oct 1, 2013
• Expiry date: Oct 4, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1171
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A magnetic write head having a tapered trailing edge and having a magnetic layer formed over a trailing edge of the write pole at a location recessed from the ABS, the magnetic layer being separated from the trailing edge of the write pole by a thin non-magnetic layer. The thin non-magnetic layer is preferably sufficiently thin that the magnetic layer can function as a portion of the write pole in a region removed from the ABS. A trailing magnetic shield is formed over the write pole and is separated from the write pole by a non-magnetic trailing gap layer. A non-magnetic spacer layer can be formed over the magnetic layer to provide additional separation between the magnetic layer and the trailing magnetic shield.