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:
Aug. 20, 2002
Filed:
Mar. 08, 2001
Murray Fulton Gillies, Eindhoven, NL;
Antonius Emilius Theodorus Kuiper, Eindhoven, NL;
Kars-Michiel Hubert Lenssen, Eindhoven, NL;
Koninklijke Philips Electronics N.V., New York, NY (US);
Abstract
A magnetic field element provided with a stack of a first magnetic layer structure ( ), a second magnetic layer structure ( ) having a substantially fixed direction of magnetization (M ), and a spacer layer structure ( ) separating the first magnetic layer structure and the second magnetic layer structure from each other. The magnetic field element is further provided with a biasing means for applying a longitudinal bias field to the first magnetic layer structure, which biasing means includes a thin biasing magnetic layer structure ( ) located opposite to the first magnetic layer structure. The biasing magnetic layer structure provides a magnetic coupling field component (M ) perpendicular to the direction of magnetization of the second magnetic layer structure and is separated from the first magnetic layer structure by a non-magnetic layer structure ( ). The first magnetic layer structure is ferromagnetically coupled to the biasing magnet layer structure. The magnetic field element is suitable for very high density applications.