Magnetic recording head having a dual sidewall angle

US8705205B1 · kind B1 · utility

Assignee

• WESTERN DIGITAL (FREMONT), LLC · US

Inventors

• Yunfei Li · Fremont, US
• Lijie Guan · San Jose, US
• Ying Hong · معلمی نژاد, US
• Zhigang Bai · Milpitas, US
• Jinqiu Zhang · Fremont, US
• Yugang Wang · Milpitas, US
• Feng Liu · San Ramon, US
• Tao Pan · San Jose, US

Key dates

• Filing date: Jun 27, 2011
• Grant date: Apr 22, 2014
• Expiry date: Sep 15, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B5/315
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A magnetic transducer having an air-bearing surface (ABS) is described. The magnetic transducer includes a pole and at least one coil for energizing the pole. The pole has a pole tip proximate to the ABS, a yoke distal from the ABS, and a bottom surface including a bottom bevel. At least the yoke includes at least one sidewall having a first angle and a second angle. The first angle is between the bottom surface and the at least one sidewall. The second angle is a constant distance along the at least one sidewall from the first angle.