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:
Jun. 03, 2025
Filed:
Jul. 19, 2022
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Samridh Jaiswal, London, GB;
Paolo Campiglio, Arcueil, FR;
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10N 50/85 (2023.01); G01R 33/09 (2006.01); H01F 10/32 (2006.01); H10N 50/10 (2023.01);
U.S. Cl.
CPC ...
G01R 33/093 (2013.01); G01R 33/098 (2013.01); H01F 10/3286 (2013.01); H10N 50/10 (2023.02); H10N 50/85 (2023.02);
Abstract
Methods and apparatus for a magnetoresistive (MR) sensor a free layer with a thickness of the CoFeB material to produce out-of-plane sensing for the sensor and a reference layer magnetically coupled to the free layer. A dusting layer of an oxide material is disposed on the free layer to achieve perpendicular magnetic anisotropy for an interface of the oxide layer and the free layer for a desired sensitivity for the sensor.