Planar SQUID gradiometers fabricated on 24 degrees and 30 degrees SrTiO3 bicrystals

Authors
Carr, C Eulenburg, A Romans, E Pegrum, CM Donaldson, GB
Citation
C. Carr et al., Planar SQUID gradiometers fabricated on 24 degrees and 30 degrees SrTiO3 bicrystals, IEEE APPL S, 9(2), 1999, pp. 3105-3108
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223 → ACNP
Volume
9
Issue
2
Year of publication
1999
Part
3
Pages
3105 - 3108
Database
ISI
SICI code
1051-8223(199906)9:2<3105:PSGFO2>2.0.ZU;2-K
Abstract
HTS de SQUID gradiometers have been fabricated on 24 degrees and 30 degrees SrTiO3, bicrystal substrates with slots and flux dams in the SQUID washers . The spatial response of such devices has been measured experimentally and compared with modelled results. Single layer devices, in terms of gradient sensitivity, have characteristics that deviate only slightly from idealize d first order gradiometers. The low frequency flux noise of these devices i s discussed with particular emphasis on both the unshielded properties and the effect of various cooldown procedures on the noise.