Numéro
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
Page(s) C8-2075 - C8-2079
DOI https://doi.org/10.1051/jphyscol:19888941
Proceedings of the International Conference on Magnetism

J. Phys. Colloques 49 (1988) C8-2075-C8-2079

DOI: 10.1051/jphyscol:19888941

JOSEPHSON EFFECTS IN CERAMIC SUPERCONDUCTORS AND THEIR APPLICATION TO SQUID MAGNETOMETRY

C. E. Gough

University of Birmingham Superconductivity Research Group, Birmingham, B15 2TT, G.B.


Abstract
A brief review is given of Josephson Effects in high-Tc superconductors with specific reference to ceramic material properties and device applications. The development of liquid-nitrogen cooled rf and dc SQUIDs for ultrasensitive magnetometry will be described. Field sensitivities of better than 10-12 T / √Hz have already been achieved but 1 / f -noise becomes important at low frequencies.