In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 37, No. 11A ( 1998-11-01), p. L1308-
Abstract:
Directly-coupled dc superconducting quantum interference device (SQUID)
magnetometers have been fabricated on SrTiO 3 bicrystal substrates with 30°
misorientation angle. YBa 2 Cu 3 O 7-δ single layers were deposited by laser ablation and
patterned by standard photolithography and Ar ion milling. The magnetometer consists of a 9 mm×9 mm pickup loop coupled to a long slit. The magnetometers have been
characterized at 77 K using conventional flux-locked loop electronics with a bias current reversal. The magnetometers exhibited high junction resistance of up to 10 Ω
and large voltage modulation depth as high as 65 µV with a flux-to-voltage transfer function of 253 µV/Φ o at the working point. A magnetic field noise level of 74 f T /√ Hz
at 1 kHz and below 100 f T /√ Hz down to 4 Hz, including electronics noise, was
achieved inside a magnetically shielded room. The performance of the magnetometer was demonstrated by magnetocardiograms with high quality.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.37.L1308
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1998
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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