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:
May. 30, 2017
Filed:
Sep. 17, 2015
Seagate Technology Llc, Cupertino, CA (US);
Thomas P. Nolan, Fremont, CA (US);
Hans Richter, Palo Alto, CA (US);
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Abstract
An apparatus may include a first magnetic layer, a first exchange break layer formed on the first magnetic layer, a second magnetic layer formed on the first exchange break layer, a second exchange break layer formed on the second magnetic layer, and a third magnetic layer formed on the second exchange break layer. The first magnetic layer has a first magnetic anisotropy energy, H, the second magnetic layer has a second magnetic anisotropy energy, H, and the third magnetic layer has a third magnetic anisotropy energy, H. In some embodiments, H−His less than H−H. In some embodiments, the apparatus may be a perpendicular magnetic recording medium.