Write heads configured to redirect current

US10861485B1 · kind B1 · utility

Assignee

• Western Digital Technologies, Inc. · US

Inventors

• Muhammad Asif Bashir · San Jose, US
• Yaguang Wei · Pleasanton, US
• Petrus Antonius Van Der Heijden · San Jose, US
• Xinjiang Shen · Fremont, US
• Terence Lam · Cupertino, US
• Zhigang Bai · Milpitas, US
• Youfeng Zheng · San Jose, US
• Changqing Shi · San Ramon, US
• Michael Kuok San Ho · Redwood City, US
• Jian Zhu · Pittsburgh, US
• Lijie Guan · San Jose, US
• Venkatesh Chembrolu · San Jose, US

Key dates

• Filing date: Aug 17, 2020
• Grant date: Dec 8, 2020
• Expiry date: Aug 17, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B5/187
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Embodiments of the present disclosure generally relate to data storage devices, and more specifically, to storage devices employing an energy-assisted magnetic recording write head. The write head may comprise a main pole, a trailing shield, a conducting gap disposed between the main pole and the trailing shield, and one or more current blockers. The conducting gap may be conformal with the main pole. The one or more current blockers may be configured to direct the current from the main pole to the trailing shield through the conducting gap. The one or more current blockers may be further configured to recess the conducting gap away from the media facing surface. The one or more current blockers may be configured to direct the current away from a media facing surface of the write head.