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:
Oct. 13, 2015
Filed:
Jul. 02, 2014
Applicant:
Wd Media, Llc, San Jose, CA (US);
Inventors:
Bincheng Wang, Sunnyvale, CA (US);
Antony Ajan, San Jose, CA (US);
Michael L. Mallary, Sterling, MA (US);
Assignee:
WD Media, LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/84 (2006.01); G11B 5/62 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/62 (2013.01); G11B 5/84 (2013.01); G11B 2005/0021 (2013.01);
Abstract
A recording medium having improved signal-to-noise ratio (SNR) capabilities includes a cap layer over the recording layer, where the cap layer has a magnetic damping constant greater than 0.03, such as by using a FeHo cap layer. One mechanism for increasing the SNR is by reducing the switching field distribution. Such a medium is particularly useful in the context of heat-assisted magnetic recording (HAMR).