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:
Nov. 20, 2007
Filed:
Jun. 08, 2004
Toshiyuki Onogi, Higashimatsuyama, JP;
Masahiko Ichimura, Sendai, JP;
Tomihiro Hashizume, Hatoyama, JP;
Toshiyuki Onogi, Higashimatsuyama, JP;
Masahiko Ichimura, Sendai, JP;
Tomihiro Hashizume, Hatoyama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Magnetoresistive devices with increased response sensitivity to external magnetic fields and an increased magnetoresistive ratio (MR ratio) to cope with rapid advances made in a highdensity magnetic recording device. A patterned dielectric layer is laminated in a flat shape on a substrate capable of being doped with carriers (holes) in an electric field, and an FET structure with gate electrodes is then fabricated on that dielectric layer, and the substrate spatially modulated by applying a nonuniform electrical field to induce a first ferromagnetic domain, a nonmiagnetic domain and a second ferromagnetic domain.