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:
Feb. 11, 2025
Filed:
Dec. 06, 2021
Tdk Corporation, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A magnetoresistance effect element includes a magnetic recording layer which includes a ferromagnetic material, a non-magnetic layer laminated on the magnetic recording layer, and a magnetization reference layer which is laminated on the non-magnetic layer. The magnetic recording layer includes a first ferromagnetic layer, a spacer layer, and a second ferromagnetic layer in order from the non-magnetic layer. The first ferromagnetic layer and the second ferromagnetic layer are antiferromagnetically coupled to each other. The magnetic recording layer has a central region in which a product of a film thickness and saturation magnetization of the first ferromagnetic layer is greater than a product of a film thickness and saturation magnetization of the second ferromagnetic layer, and an outer region in which the product of the film thickness and the saturation magnetization of the first ferromagnetic layer is smaller than the product of the film thickness and the saturation magnetization of the second ferromagnetic layer.