A MINIATURE SQUID MAGNETOMETER WITH DIRECT READ-OUT ELECTRONICS

Authors
POLUSHKIN V WALLIS M GLOWACKA D MATTHEWS A LUMLEY JM
Citation
V. Polushkin et al., A MINIATURE SQUID MAGNETOMETER WITH DIRECT READ-OUT ELECTRONICS, IEEE transactions on applied superconductivity, 7(2), 1997, pp. 1053-1056
Citations number
20
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on applied superconductivity → ACNP
ISSN journal
10518223
Volume
7
Issue
2
Year of publication
1997
Part
1
Pages
1053 - 1056
Database
ISI
SICI code
1051-8223(1997)7:2<1053:AMSMWD>2.0.ZU;2-3
Abstract
A novel miniature SQUID magnetometer with direct read-out electronics has been developed. A high flux-to-voltage transfer factor of up to 25 00 mV/Phi(0) is achieved without additional positive feedback (Phi(0) is the flux quantum). A flux resolution of 8x10(-7)Phi(0)/Hz(1/2), cor responding to a magnetic moment sensitivity of approximately 2x10(-20) Am-2/Hz(1/2) has been measured. This magnetometer can be used to stud y the dynamic magnetization properties (including NMR and MRI) of micr on and sub-micron size particles and for high-resolution surface magne tometry.