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. 10, 2007
Filed:
Mar. 03, 2004
Applicants:
B. Ramamurthy Acharya, Cupertino, CA (US);
Jianing Zhou, Fremont, CA (US);
Gunn Choe, San Jose, CA (US);
Min Zheng, Milpitas, CA (US);
Inventors:
B. Ramamurthy Acharya, Cupertino, CA (US);
Jianing Zhou, Fremont, CA (US);
Gunn Choe, San Jose, CA (US);
Min Zheng, Milpitas, CA (US);
Assignee:
Maxtor Corporation, Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved soft underlayer structure for perpendicular magnetic recording. The structure includes at least two soft underlayers separated by a non-magnetic spacer layer. The soft underlayer structure incorporates exchange coupling induced anisotropy for improved perpendicular magnetic recording properties, including an improved signal-to-noise ratio (SNR) and reduced adjacent track erasure.