发明名称 |
Magnetic sensor, production process of the magnetic sensor and magnetic array suitable for the production process |
摘要 |
The present invention aims to provide 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 11a . . . 11a including a pinned layer and a free layer. Disposed below both ends of the free layer are bias magnet films 11b . . . 11b composed of a permanent magnet that applies to the free layer a bias magnetic field in a predetermined direction and an initializing coil 31 that is disposed in the vicinity of the free layer and applies to the free layer a magnetic field having the direction same as that of the bias magnetic field by being energized under a predetermined condition. Further, magnetizing the bias magnet films and fixing the direction of magnetization of the pinned layer are performed by a magnetic field formed by a magnet array configured such that plural permanent magnets are arranged on a lattice point of a tetragonal lattice and a polarity of a magnet pole of each permanent magnet is different from a polarity of the other adjacent magnet pole spaced by the shortest route. |
申请公布号 |
AU2003257500(B2) |
申请公布日期 |
2008.10.23 |
申请号 |
AU20030257500 |
申请日期 |
2003.10.22 |
申请人 |
YAMAHA CORPORATION |
发明人 |
TOSHIYUKI OOHASHI;YUKIO WAKUI |
分类号 |
G01D5/16;H01L43/06;G01D5/14;G01R33/09;H01F10/32;H01F13/00;H01F17/00;H01F41/30;H01L43/08 |
主分类号 |
G01D5/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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