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:
Dec. 01, 2015
Filed:
Jan. 09, 2015
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Assignee:
HGST NETHERLANDS B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01);
U.S. Cl.
CPC ...
G11B 5/39 (2013.01);
Abstract
Embodiments disclosed herein generally relate to a MAMR head. The MAMR head includes an STO. The STO has a first surface at a media facing surface, and a portion of the first surface has a trapezoidal shape. Having this configuration, the acute angles of the trapezoidal shaped portion provide a greater width of the STO at the media facing surface, which protect the main pole from over-etching during the fabrication of the STO. In addition, the acute angles of the trapezoidal shaped portion of the first surface are large enough to keep a low STO driving voltage and provide the MAMR head with a long operation lifetime and higher reliability.