| Zugriffsnummer | 11465 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Improved direct-coupled high-Tc SQUID magnetometers for operation in magnetically unshielded environment |
| Autor(in); Institution |
Ludwig, Frank; 7.13, Kryosensorik, PTB-Berlin
Drung, Dietmar; 7.13, Kryosensorik, PTB-Berlin
Bechstein, Sylke; 7.13, Kryosensorik, PTB-Berlin
Beyer, Jörn; 7.13, Kryosensorik, PTB-Berlin
Schurig, Thomas; 7.13, Kryosensorik, PTB-Berlin
|
| Quelle/Jahr | ISEC 99, 7th International Superconductive Electronics Conference: Extended abstracts:(1999), 563 - 565 |
| Herausgeber(in) |
Van Duzer, Ted
|
| Verlag | Berkeley, Calif.: |
| Konferenzangaben | ISEC'99, 7th International Superconductive Electronics Conference, Berkeley, Calif., 21-25, June, 1999, USA |
| Freie Schlagworte | High-Tc SQUIDs |
| Zusammenfassung | We have developed direct-coupled SQUID magnetometers based on 30° bicrystal junctions that can be cooled in static magnetic fields of 60 μT and exposed to ac magnetic fields with peak-to-peak amplitudes of at least 5 μT without increasing the noise at 1 Hz. The improved magnetometers are composed of a 100 pH SQUID loop with a linewidth of 4 μm and a pickup coil consisting of 16 parallel, 50 μm wide loops. Each of these loops crosses the bicrystal line, thus forming a flux dam with a critical current of about 1 mA. The best noise at 1 Hz of such a direct-coupled magnetometer cooled in 64 μT was 65 fTHz-1/2. |
Zitierung
Ludwig, F., Drung, D., Bechstein, S., Beyer, J., & Schurig, T. (1999). Improved direct-coupled high-Tc SQUID magnetometers for operation in magnetically unshielded environment. ISEC'99, 7th International Superconductive Electronics Conference, Berkeley, Calif., 21-25, June, 1999, USA.