Write head with modified side shields

US8970992B2 · kind B2 · utility

Assignee

• Seagate Technology LLC · US

Inventors

• Mourad Benakli · Eden Prairie, US
• Kirill Rivkin · Minneapolis, US
• James Gary Wessel · Savage, US
• Dehua Han · Fremont, US
• Huaqing Yin · Eden Prairie, US
• Jianhua Xue · Maple Grove, US

Key dates

• Filing date: May 9, 2013
• Grant date: Mar 3, 2015
• Expiry date: May 9, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B5/6082
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing surface, a leading surface that is opposite the trailing surface, and first and second surfaces; a trailing shield proximate the trailing surface of the magnetic write pole; first and second gaps proximate the first and second surfaces of the magnetic write pole; first and second side shields proximate the first and second gaps, each of the first and second side shields having a trailing shield surface; and first and second antiferromagnetic-coupling layers positioned between the trailing shield surfaces of the first and second side shields and the trailing shield.