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:
Nov. 01, 2022
Filed:
Mar. 12, 2020
Applicant:
Alps Alpine Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
ALPS ALPINE CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 10/32 (2006.01); G01R 33/09 (2006.01); H01L 43/08 (2006.01); H01L 43/10 (2006.01);
U.S. Cl.
CPC ...
H01F 10/329 (2013.01); G01R 33/093 (2013.01); H01F 10/3272 (2013.01); H01L 43/08 (2013.01); H01L 43/10 (2013.01);
Abstract
In an exchange coupling film that has a large magnetic field (Hex) in which the direction of magnetization of a fixed magnetic layer is reversed, high stability under high temperature conditions, and excellent strong-magnetic field resistance, an antiferromagnetic layer, a fixed magnetic layer, and a free magnetic layer are stacked, the antiferromagnetic layer is composed of a PtCr layer and an XMn layer (where X is Pt or Ir), the XMn layer is in contact with the fixed magnetic layer, and the fixed magnetic layer is made of iron, cobalt, an iron-cobalt alloy, or an iron-nickel alloy.