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...
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| Published in: | IEEE transactions on applied superconductivity Vol. 7; no. 2; pp. 3702 - 3705 |
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| Main Authors: | , , , , , , , , , , , , , , |
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| Language: | English |
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01-06-1997
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| Abstract | 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. |
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| AbstractList | Nonaqueous Br-ethanol chemical etching was successfully used for the preparation of the Josephson junctions, vias and crossovers in magnetometers including flux transformers. PrBa(2)Cu(3)O(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 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. |
| Author | Wordenweber, R. Gapelyuk, A.V. Maslennikov, Yu.V. Urban, K. Khanin, V.V. Braginski, A.I. Hohmann, R. Krause, H.-J. Poppe, U. Slobodchikov, V.Yu Soltner, H. Bousack, H. Lomparski, D. Faley, M.I. Kutzner, R. |
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| Cites_doi | 10.1063/1.113555 10.1063/1.116100 10.1063/1.115342 10.1063/1.350535 10.1063/1.115087 10.1063/1.111251 10.1016/0921-4534(94)91519-9 10.1063/1.110565 |
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| References | faley (ref2) 1994; 235–240 miklich (ref7) 1994; 64 ref4 faley (ref9) 1997; 7 ref6 ref10 ref5 faley (ref3) 1995; 67 tavrin (ref8) 1995; 148 ref1 |
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| Snippet | Nonaqueous Br-ethanol chemical etching was successfully used for the preparation of the Josephson junctions, vias and crossovers in magnetometers including... |
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| StartPage | 3702 |
| SubjectTerms | Chemicals Critical current density Electrodes Etching Josephson junctions Magnetic shielding Power transformer insulation SQUID magnetometers Temperature sensors Transistors |
| Title | Dc-SQUID magnetometers and gradiometers on the basis of quasiplanar ramp-type Josephson junctions |
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