| Presentation | 2001/10/6 Magnetometer Utilizing Wide Bicrystal Junctions Shintaro Hijiya, Tong Quing Yang, Daisuke Kuroda, Keiji Enpuku, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Magnetometer utilizing a wide bicrystal junction is developed. The sensor makes use of the magnetic field dependence of the I-V curve of the junction. First, dependence of the I-V curve on the junction width is clarified from the simulation and the experiment. It is shown that the junction width should be less than 5λ_J for the sensor application, where λ_J is the Josephson penetration depth. Next, magnetic sensor is fabricated by coupling the junction with a width of 20 μm to the flux focusing plate with an area of 400 μm × 400 μm. The magnetic field noise of 12 pT/Hz^<1/2> is obtained in the white noise region, while the value of 25 pT/Hz^<1/2> is obtained at f=1 Hz. These values are comparable to those obtained with the SQUID having the same area of the pickup coil. Finally, it is pointed out that the noise current that flows the electrode produces the magnetic field noise in the case of wide junctions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | superconducting magnetic sensor / bicrystal junction / flux focusing effect / 1/ƒ noise |
| Paper # | SCE2001-32 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2001/10/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Magnetometer Utilizing Wide Bicrystal Junctions |
| Sub Title (in English) | |
| Keyword(1) | superconducting magnetic sensor |
| Keyword(2) | bicrystal junction |
| Keyword(3) | flux focusing effect |
| Keyword(4) | 1/ƒ noise |
| 1st Author's Name | Shintaro Hijiya |
| 1st Author's Affiliation | Department of Electronics, ISEE, Kyushu University() |
| 2nd Author's Name | Tong Quing Yang |
| 2nd Author's Affiliation | Department of Electronics, ISEE, Kyushu University |
| 3rd Author's Name | Daisuke Kuroda |
| 3rd Author's Affiliation | Department of Electronics, ISEE, Kyushu University |
| 4th Author's Name | Keiji Enpuku |
| 4th Author's Affiliation | Department of Electronics, ISEE, Kyushu University |
| Date | 2001/10/6 |
| Paper # | SCE2001-32 |
| Volume (vol) | vol.101 |
| Number (no) | 348 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |