2010 Fiscal Year Final Research Report
Developing high sensitive AMR sensor with superconducting concentrator
| Project/Area Number |
21760054
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied physics, general
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
HE Dongfeng National Institute for Materials Science, 超伝導材料センター, 主任研究員 (60391223)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 超伝導 / 磁気抵抗センサー |
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| Research Abstract |
By combining the AMR (anisotropic magneto resistive) sensor and the superconducting flux concentrator, the AMR sensor with high sensitivity and high stability was developed. Superconducting YBCO film and NiFe film were deposited on the LaAlO_3 substrate, and superconducting flux contractor and AMR sensor were fabricated on it. The sensor could operate well at liquid nitrogen temperature. Using the low noise driving circuit developed by us, the magnetic field resolution of about 2pT/〓Hz was achieved. Compared with normal AMR sensor, the field resolution was improved by about 8 times in a wide bandwidth from DC to 1 MHz.
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