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:
Oct. 05, 2010
Filed:
Jul. 17, 2008
Yoshihiko Togawa, Wako, JP;
Ken Harada, Wako, JP;
Tsuyoshi Matsuda, Wako, JP;
Yoshichika Otani, Wako, JP;
Takashi Kimura, Wako, JP;
Yoshihiko Togawa, Wako, JP;
Ken Harada, Wako, JP;
Tsuyoshi Matsuda, Wako, JP;
Yoshichika Otani, Wako, JP;
Takashi Kimura, Wako, JP;
Riken, Saitama, JP;
Abstract
The magnetization state of a ferromagnetic material is controlled by applying a current pulse to it while externally applying a weak magnetic field to it. The magnetic state of a ferromagnetic material can be switched between a uniformly magnetized state and a multiple magnetic domain structure by controlling the direction and intensity of the magnetic field applied to it and the intensity and pulse width of the current pulse. When an external magnetic field is applied, the possibility of occurrence of the reversal of the magnetic state upon application of the current pulse shows a hysteresis, and the reversal of the magnetic state can be controlled reliably. The intensity of the magnetic field to be applied may be as weak as a few gauss. Furthermore, by using such magnetic information recording elements, a magnetic information recording device (memory) that can achieve a high degree of integration can be produced.