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, 1997
Filed:
Jul. 10, 1995
Jean Mouchot, Grenoble, FR;
Bernard Dieny, Seyssinet, FR;
Abstract
A self-bias sensor including a current source, a resistance measuring device and a sensor element sensitive to a magnetic field to be measured. The sensor element receives from the current source a current which creates a self-biasing field. The sensor element includes a first ferromagnetic layer having a magnetization direction which is sensitive to the magnetic field and when not subject to the magnetic field, and is oriented by the self-biasing field in a direction perpendicular to a longitudinal direction of the sensor element; a second ferromagnetic layer disposed between a first and second conductive layer, where the second ferromagnetic layer has a magnetization which is blocked and directed in the longitudinal direction; and a third ferromagnetic layer which is disposed on the second conductive layer and has a magnetization direction which is sensitive to the magnetic field and, when not subject to the magnetic field, is oriented by the self-biasing field in a second direction perpendicular to the longitudinal direction and substantially of an opposite sense to the magnetization of the first ferromagnetic layer.