Highly balanced long-baseline single-layer high-Tc superconducting quantum interference device gradiometer
Eulenburg, A. ; Romans, E. J. ; Carr, C. ; Millar, A. J. ; Donaldson, G. B. ; Pegrum, C. M.
Woodbury, NY : American Institute of Physics (AIP)
Published 1999
Woodbury, NY : American Institute of Physics (AIP)
Published 1999
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We describe a direct-current superconducting quantum interference device (SQUID) first-order gradiometer fabricated from a single layer of YBa2Cu3O7 on a 30×10 mm2 bicrystal substrate. The device has a baseline of 13 mm and an intrinsic balance of ∼10−3. The gradient sensitivity at 77 K and 1 kHz is 50 fT/(cmHz) in magnetic shielding and 260 fT/(cmHz) when operated unshielded in our laboratory. An antiparallel two-SQUID coupling scheme is employed to optimize the device's balance to at least 3×10−5. © 1999 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |