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:
Dec. 30, 2014
Filed:
Jan. 25, 2013
Magnetic seed method for improving blocking temperature and shield to shield spacing in a tmr sensor
Applicant:
Headway Technologies, Inc., Milpitas, CA (US);
Inventors:
Junjie Quan, Milpitas, CA (US);
Kunliang Zhang, Fremont, CA (US);
Min Li, Fremont, CA (US);
Hui-Chuan Wang, Pleasanton, CA (US);
Assignee:
Headway Technologies, Inc., Milpitas, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for manufacturing a TMR sensor is disclosed wherein the blocking temperature of the AFM layer in the TMR sensor has been raised by inserting a magnetic seed layer between the AFM layer and the bottom shield. This gives the device improved thermal stability, including improved SNR and BER.