2010 Fiscal Year Final Research Report
High Sensitivity Spin-tunneling Magnetic Sensor Using Oscillatory Domain Wall Displacement
| Project/Area Number |
20360157
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Nagoya University |
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Principal Investigator |
IWATA Satoshi Nagoya University, 工学研究科, 教授 (60151742)
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| Co-Investigator(Kenkyū-buntansha) |
KATO Takeshi 名古屋大学, 工学研究科, 准教授 (50303665)
TSUNASHIMA Shigeru 名古屋大学, 工学研究科, 教授 (80023323)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 磁気センサ / 巨大磁気抵抗効果 / スピントンネル効果 / 磁壁移動 |
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| Research Abstract |
Magnetic sensors with wall displacement type have been developed by using giant magnetoresistance or spin tunneling effects. In order to reduce the influence of wall coercivity, which disturbs wall moving arising from an applied magnetic field, a new detection method in which the magnetic wall position was oscillatory modulated by alternative magnetic field was invented and the sensor devices composed by a magnetoresistive element and a conductor line for applying alternating field were developed. Consequently, the sensitivity for magnetic field was significantly improved compared to the conventional magnetic sensor with magnetization rotation mode.
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