Magnetic sensor and method of producing the same

Details Magnetic sensor and method of producing the same Magnetic sensor and method of producing the same

2005-06-14

2005-06-14

Pert, Evan (Department: 2829)

Metal working

Method of mechanical manufacture

Electrical device making

C438S003000

Reexamination Certificate

active

06904669

ABSTRACT:
On a single chip are formed a plurality of magnetoresistance effect elements provided with pinned layers having fixed magnetization axes in the directions that cross each other. On a substrate10are formed magnetic layers that will become two magnetic tunnel effect elements11, 21as magnetoresistance effect elements. Magnetic-field-applying magnetic layers made of NiCo are formed to sandwich the magnetic layers in plan view. A magnetic field is applied to the magnetic-field-applying magnetic layers. The magnetic field is removed after the magnetic-field-applying magnetic layers are magnetized in the direction shown by arrow A. As a result of this, by the residual magnetization of the magnetic-field-applying magnetic layers, magnetic fields in the directions shown by arrows B are applied to the magnetic layers that will become magnetic tunnel effect elements11, 21,whereby the magnetization of the pinned layers of the magnetic layers that will become magnetic tunnel effect elements11, 21is pinned in the directions shown by arrows B.

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Copy of Notification of Reasons for Refusal dated Aug. 12, 2003 (and English translation of same).
Copy of Partial European Search Report dated Feb. 4, 2004.

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