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:
Apr. 12, 2022
Filed:
Feb. 18, 2021
Western Digital Technologies, Inc., San Jose, CA (US);
Yifan Zhang, San Jose, CA (US);
Ming Sun, San Jose, CA (US);
Ming Jiang, San Jose, CA (US);
William Sides, San Jose, CA (US);
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Abstract
The present disclosure is generally related to a magnetic media drive employing a magnetic recording head. The magnetic recording head comprises a main pole and a wrap-around shield surrounding at least two sides of the main pole at a media facing surface. The wrap-around shield comprises an electroplated, laminated NiFeX film, where X is one of Re, Cr, or Ir. The NiFeX film comprises about 1 atomic percent to about 12 atomic percent of X, about 30 atomic percent to about 50 atomic percent of Ni, and balance of Fe. The NiFeX film comprises a plurality of layers, each layer comprising a first sublayer having a Re content of about 1 atomic percent to about 43 atomic percent and a second sublayer having a Re content of about 0 atomic percent to about 12 atomic percent. The NiFeX film increases the damping constant of the magnetic recording head.