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.

Date of Patent:
Apr. 22, 2008

Filed:

Aug. 24, 2004
Applicants:

Naoya Hasegawa, Niigata-ken, JP;

Eiji Umetsu, Niigata-ken, JP;

Masamichi Saito, Niigata-ken, JP;

Yosuke Ide, Niigata-ken, JP;

Masahiro Oshima, Niigata-ken, JP;

Inventors:

Naoya Hasegawa, Niigata-ken, JP;

Eiji Umetsu, Niigata-ken, JP;

Masamichi Saito, Niigata-ken, JP;

Yosuke Ide, Niigata-ken, JP;

Masahiro Oshima, Niigata-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01); G11B 5/127 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fixed magnetic layer contains a first magnetic layer formed on a non-magnetic metal layer. The non-magnetic metal layer is composed of an X—Mn alloy (where X is selected from Pt, Pd, Ir, Rh, Ru, Os, Ni, and Fe). While atoms forming the first magnetic layer and atoms forming the non-magnetic metal layer are being aligned with each other, strains are generated in the individual crystal structures. By generating the strain in the crystal structure of the first magnetic layer, the magnetostriction constant λ is increased. As a result, a magnetic sensor having a large magnetoelastic effect can be provided.


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Hasegawa, Naoya. (2008). Spin-valve magnetoresistive element having fixed magnetic layer of epitaxal laminate including magnetic layer and nonmagnetic layer (U.S. Patent No. 7362546). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7362546

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