2010 Fiscal Year Final Research Report
Development of high performance micro magnetic sensor based on spin torque driving nano device
| Project/Area Number |
20310073
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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 |
Microdevices/Nanodevices
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YAMAGUCHI Akinobu 慶應義塾大学, 理工学部, 助教 (70423035)
UTSUMI Yuichi 兵庫県立大学, 附属研究所, 准教授 (80326298)
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| Project Period (FY) |
2008 – 2010
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| Keywords | マイクロ磁気センサ / ナノ磁性体 / スピンダイナミックス / スピントルク |
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| Research Abstract |
We established noise reduction technology for a micro magnetic sensor(magneto-impedance sensor) utilizing spin dynamics in case of pulse current excitation. It is shown that noise level of the magneto-impedance senor is smaller than 1pT/Hz^<1/2> at room temperature. It is investigated that resonance frequency of magnetic wall with rotating magnetic vortices is controlled by spin transfer torque. It is shown that resonance frequency of the rotating vortices sensitive depends on applied magnetic fields.
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