| Zugriffsnummer | 29671 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | YBa2Cu3O7-x dc SQUID magnetometers with bicrystal junctions for biomagnetic multichannel applications |
| Autor(in); Institution |
Ludwig, Frank; 7.13, Kryosensorik, PTB-Berlin
Beyer, Jörn; 7.13, Kryosensorik, PTB-Berlin
Drung, Dietmar; 7.13, Kryosensorik, PTB-Berlin
Bechstein, Sylke; 7.13, Kryosensorik, PTB-Berlin
Schurig, Thomas; 7.13, Kryosensorik, PTB-Berlin
|
| Quelle/Jahr | ISEC 97, 6th International Superconductive Electronics Conference: Extended Abstracts : Microwave devices, SQUID and other applications: 3 (1997), 4 - 6 |
| Herausgeber(in) |
Koch, Hans; 8.2, Biosignale, PTB-Berlin
Knappe, S.; Technische Universität Berlin, GERMANY
|
| ISBN | 3-9805741-0-5 |
| Verlag | Braunschweig: Physikalisch-Technische Bundesanstalt |
| Konferenzangaben | International Superconductive Electronics Conference (ISEC 1997), Berlin, 25-28, June, 1997, Germany |
| Zusammenfassung | We have fabricated direct-coupled YBa2Cu3O7-x SQUID magnetometers on 10 mm × 24° SrTiO3 bicrystal substrates. The thin filmes were deposited by hollow cathode discharge sputtering and patterned using conventional photolithography and Ar ion beam etching. The optimization of the fabrication process was performed utilizing Design of Experiment methodology. The SQUID megnetometers were operated with an improved direct-coupled flux-locked loop electronics with a preamplifier voltage noise of 0.5 nVHz -1/2 and bias reversal (fac=0.1-500 kHz). The best sensor had a white noise of 41 fTHz-1/2 and a 1/f corner at 2 Hz, including electronics and environmental noise. High-quality magneto-cardiograms recorded in the Berlin magnetically shielded room (BMSR) illustrate that the sensors are suitable for biomagnetic multichannel systems. |
Zitierung
Ludwig, F., Beyer, J., Drung, D., Bechstein, S., & Schurig, T. (1997). YBa₂Cu₃O7-x dc SQUID magnetometers with bicrystal junctions for biomagnetic multichannel applications. International Superconductive Electronics Conference (ISEC 1997), Berlin, 25-28, June, 1997, Germany.