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. 26, 2022
Filed:
Jun. 21, 2021
Western Digital Technologies, Inc., San Jose, CA (US);
Kai Tang, San Jose, CA (US);
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Abstract
Magnetic recording media including a soft magnetic underlayer (SUL) formed over an oxidized pre-seed layer. In some examples, the pre-seed layer is oxidized to reduce an amount of intermixing between the pre-seed layer and the SUL. The reduction in intermixing via oxidation can lead to improved recording performance of the recording media that are deposited on the SUL. In particular, media overwrite, signal-to-noise ratio (SNR), linear recording density, and areal recording density or areal density capacity (ADC) can be improved. In one aspect, a deposition apparatus may be modified to inject oxygen during pre-seed layer deposition to oxidize the pre-seed layer.