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. 14, 2023
Filed:
Mar. 18, 2021
Tdk Corporation, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetic sensor whose output characteristic is less sensitive to the environmental temperature is provided. Magnetic sensorhas free layerwhose magnetization direction changes in response to an external magnetic field, pinned layerwhose magnetization direction is fixed with respect to the external magnetic field, spacer layerthat is located between pinned layerand free layerand that exhibits a magnetoresistance effect, and at least one magnet filmthat applies a bias magnetic field to free layer. The film thickness of the magnet film is 15 nm or more and 50 nm or less. The relationship of 0.7≤T/T≤1.05 is satisfied, where Tis Curie temperature of the magnet film, and Tis Curie temperature of the free layer.