Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnetostrictive-type device
Reexamination Certificate
2006-07-11
2006-07-11
Enad, Elvin (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnetostrictive-type device
Reexamination Certificate
active
07075395
ABSTRACT:
Disclosed is a magnetic sensor provided with a magnetoresistive effect element capable of stably maintaining a direction of magnetization in a magnetic domain of a free layer.The magnetic sensor includes a magnetoresistive effect element provided with narrow zonal portions including a pinned and a free layer. Disposed below both ends of the free layer are bias magnet films that apply a bias magnetic field to the free layer and an initializing coil31disposed near the free layer. Further, magnetizing the bias magnet films and fixing a direction of magnetization of the pinned layer are performed by a magnetic field formed by a magnet array configured such that permanent magnets are arranged on a lattice point of a tetragonal lattice wherein magnet pole polarity is different from adjacent magnet pole polarity spaced by the shortest route.
REFERENCES:
patent: 6690526 (2004-02-01), Ito et al.
patent: 6707298 (2004-03-01), Suzuki et al.
patent: 6728080 (2004-04-01), Ito et al.
patent: 6791807 (2004-09-01), Hikami et al.
patent: 2002/0142490 (2002-10-01), Sato et al.
patent: 2004/0145836 (2004-07-01), Kojima et al.
patent: 2004/0246632 (2004-12-01), Nishioka et al.
patent: 2005/0054120 (2005-03-01), Wakui et al.
patent: 1367481 (2002-09-01), None
patent: 196 49 265 (1998-06-01), None
patent: 197 42 366 (1999-05-01), None
patent: 1306687 (2003-05-01), None
patent: 2000-338211 (2000-12-01), None
patent: 2002-207071 (2002-07-01), None
patent: 2002-252393 (2002-09-01), None
patent: 2002-299728 (2002-10-01), None
patent: 2004-193540 (2004-07-01), None
Copy of Honeywell catalog re Linear Magnetic Field Sensors.
Hill et al., Sensors and Actuators A, vol. 59, pp. 30-37 (1997).
Ron Neale, “Taming the Giant MagnetoResistance (GMR) effect”, Sensors, Electronic Engineering, pgs. 36-40 (1996).
Smith et al., “The Growing Role of Solid-State Magnetic Sensing”, Sensors Expo-Detroit, pp. 139-149 (1997).
Spong et al., “Giant Magnetoresistive Spin Valve Bridge Sensor”, IEEE Transactions on Magnetics, vol. 32, No. 2, pp. 366-371 (1996).
Daughton et al., “Magnetic Field Sensors Using GMR Multilayer”, IEEE Transactions on Magnetics, vol. 30, No. 6, pp. 4608-4610 (1994).
Oohashi Toshiyuki
Wakui Yukio
Dickstein , Shapiro, Morin & Oshinsky, LLP
Enad Elvin
Rojas Bernard
Yamaha Corporation
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