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. 14, 1998
Filed:
Mar. 29, 1996
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnetoelectric transducer is proposed using the GMR effect which operates stably even in a wider range of magnetic field, and over a wider temperature range, than currently available. Upon a substrate 5 there are formed a first magnetic layer 1, a non magnetic layer 3, a second magnetic layer 2, and a rare earth--transition metal alloy layer 4. The second magnetic layer 2 and the rare earth--transition metal alloy layer undergo exchange coupling. The axes of easy magnetization of the second magnetic layer 2 and the rare earth--transition metal alloy layer 4 lie along the surfaces of these layers. The composition of the rare earth--transition metal alloy layer 4 exhibits rare earth dominance at room temperature. The main component of the non magnetic layer 3 is Cu, and the thickness of this layer 3 is at least 1.5 nm.