Dc-SQUID magnetometers and gradiometers on the basis of quasiplanar ramp-type Josephson junctions

Nonaqueous Br-ethanol chemical etching was successfully used for the preparation of the Josephson junctions, vias and crossovers in magnetometers including flux transformers. PrBa/sub 2/Cu/sub 3/O/sub 7-x/ thin films were used for the barrier layer in the Josephson junctions of the SQUIDs and as an...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1997-06, Vol.7 (2), p.3702-3705
Main Authors: Faley, M.I., Poppe, U., Urban, K., Krause, H.-J., Soltner, H., Hohmann, R., Lomparski, D., Kutzner, R., Wordenweber, R., Bousack, H., Braginski, A.I., Slobodchikov, V.Yu, Gapelyuk, A.V., Khanin, V.V., Maslennikov, Yu.V.
Format: Article
Language:English
Subjects:
Chemicals
Critical current density
Electrodes
Etching
Josephson junctions
Magnetic shielding
Power transformer insulation
SQUID magnetometers
Temperature sensors
Transistors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nonaqueous Br-ethanol chemical etching was successfully used for the preparation of the Josephson junctions, vias and crossovers in magnetometers including flux transformers. PrBa/sub 2/Cu/sub 3/O/sub 7-x/ thin films were used for the barrier layer in the Josephson junctions of the SQUIDs and as an insulation in the junctions and in the flux transformers. Dc-SQUID magnetometers with small inductances and even without flux antennas were used for NDE applications which mainly require a high dynamic range. Highly sensitive devices were prepared with flip-chip flux antennas. An ac-bias SQUID electronics significantly improves the sensitivity of the magnetometers at low frequencies.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.622222