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Title: Selection of the best proper DC-SQUIDs in a multi-SQUID configuration
Authors: Avcı, İlbeyi
Akram, R.
Bozbey, Ali
Tepe, Mustafa
Abukay, Doğan
Keywords: SQUID
Bicrystal Josephson junctions
Multi-SQUID configuration
Yttrium compounds
Magnetron sputtering
Publisher: IEEE
Source: Avcı, İ., Akram, R., Bozbey, A., Tepe, M., and Abukay, D. (2007). Selection of the best proper DC-SQUIDs in a multi-SQUID configuration. IEEE Transactions on Applied Superconductivity, 17(2), 680-682. doi:10.1109/TASC.2007.898152
Abstract: We have carried out experimental investigation of multi-DC-SQUID magnetometer configuration fabricated on YBa2Cu30 7-δ thin films onto 24 degree SrTiO3 bicrystal substrates by directly coupling the pick-up loop to DC-SQUIDs. The layout of the magnetometer pick-up loop was chosen as a square washer configuration by maximizing loop effective area and minimizing loop inductance. We have used De-Magnetron Sputtering technique for deposition of the films and chemical etching process for patterning the Josephson junctions having 4 μm widths. The use of multi-SQUID configuration is related to the selection of the best proper junctions for SQUID to improve the chip sensitivity with selectivity option of choosing the squid junctions rather than multichannel operation. Selection of the best junctions compared to each other depending on the junction critical currents and noise levels caused by the fabrication process and placements of the junctions on the grain boundary enable having an increased output signal of the DC-SQUID.
ISSN: 1051-8223
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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