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:
Jul. 28, 2009
Filed:
Oct. 26, 2005
Ryo Nakabayashi, Niigaka-ken, JP;
Eiji Umetsu, Niigaka-ken, JP;
Kazuaki Ikarashi, Niigaka-ken, JP;
Fumihito Koike, Niigata-ken, JP;
Naoya Hasegawa, Niigaka-ken, JP;
Ryo Nakabayashi, Niigaka-ken, JP;
Eiji Umetsu, Niigaka-ken, JP;
Kazuaki Ikarashi, Niigaka-ken, JP;
Fumihito Koike, Niigata-ken, JP;
Naoya Hasegawa, Niigaka-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A magnetic sensing element includes a free magnetic layer having a three-layer structure including a first enhancement layer in contact with a nonmagnetic material layer, a second enhancement layer, and a low-coercivity layer. The second enhancement layer has a lower magnetostriction coefficient λ than the first enhancement layer. If such an enhancement layer having a bilayer structure is used, rather than a known monolayer structure, and the second enhancement layer has a lower magnetostriction coefficient λ than the first enhancement layer, the rate of change in magnetoresistance of the magnetic sensing element can be increased with no increase in the magnetostriction coefficient λ of the free magnetic layer.