The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Mar. 26, 2025
Seagate Technology Llc, Fremont, CA (US);
Michael Allen Seigler, Eden Prairie, MN (US);
Weibin Chen, Bloomington, MN (US);
Jianhua Xue, Maple Grove, MN (US);
Jie Gong, Eden Prairie, MN (US);
Joseph Roth, Minneapolis, MN (US);
Tong Zhao, Eden Prairie, MN (US);
Seagate Technology LLC, Fremont, CA (US);
Abstract
Described are magnetic write heads for heat-assisted magnetic recording (HAMR) in which either or both of the heat sink disk or middle disk of the near field transducer are composed of magnetic materials. In addition, any diffusion barrier layers provided between the write pole and the heat sink or other components may include magnetic materials. Constructing write heads that include magnetic material containing components between the write pole and the near field transducer may result in increased areal density capability (ADC) due to lowering the magnetic field angle, decreasing the magnetic field rise time, and/or increasing the magnetic field strength.