Magnetic hysteresis in integrated low Tc SQUID gradiometers

R.H. Koch; M.B. Ketchen; W.J. Gallagher; R.L. Sandstrom; A.W. Kleinsasser; D.R. Gambrel; T.H. Field; H. Matz

doi:10.1063/1.105091

Applied Physics Letters

Paper

01 Dec 1991

Magnetic hysteresis in integrated low T_c SQUID gradiometers

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Abstract

We have measured the magnetic hysteresis of thin-film superconducting gradiometers. The fractional hysteresis error h was found to be about 10 -9-10-11 in several devices.

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Low-noise thin-film TlBaCaCuO dc SQUIDs operated at 77 K

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Abstract

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