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:
Apr. 19, 2005
Filed:
Jun. 07, 2001
Arno Ehresmann, Zweibruecken, DE;
Wolfgang-dietrich Engel, Trier, DE;
Juergen Fassbender, Hochspeyer, DE;
Burkard Hillebrands, Kaiserslautern, DE;
Roland Mattheis, Jena, DE;
Tim Mewes, Zweibruecken, DE;
Arno Ehresmann, Zweibruecken, DE;
Wolfgang-Dietrich Engel, Trier, DE;
Juergen Fassbender, Hochspeyer, DE;
Burkard Hillebrands, Kaiserslautern, DE;
Roland Mattheis, Jena, DE;
Tim Mewes, Zweibruecken, DE;
Abstract
The invention relates to a Wheatstone bridge containing bridge elements that are connected in a conventional manner and consisting of a spin-valve system, in addition to a method for producing the same. The aim of the invention is to produce a Wheatstone bridge, in which respective half-bridges lying adjacent to one another have a respective non-parallel bias magnetisation direction. To achieve this, the respective bridge elements that are not adjacent (or) are provided with a doping of implantable ions in quantities of between 1.10and 5.10atoms/cm2 beneath the pinned ferromagnetic layer of a GMR- or TMR-spin-valve layer system. During the bombardment of selected bridge areas () or surface areas, which are not provided with a covering (), with a low dose of low-energy ions, whose strengths are sufficiently great to enable the is ions to penetrate the pinned ferromagnetic layer, all surface areas or bridge elements () are exposed to a homogeneous, targeted magnetic field of sufficient strength.