Studies of High-T c YBa2Cu3Oy SQUIDs

H. C. Yang ； S. Y. Yang ； H. E. Horng ； H. W. Yu ； J. H. Chen ； J. T. Jeng ； H. W. Lin

《Chinese Journal of Physics》 Volume 382S期 (2000/04) Pp. 322-329

Parallel abstracts

The characteristics of high-Tc step-edge or bicrystal junctions and SQUIDs are examined. The IcRn product of junctions was found to be proportional to (jc)^p with p ～ 0.5 over several orders of magnitude in jc and at various temperatures. The V - Φ and noise characteristics of SQUID were compared with the numerical expression of Enpuku et al. We demonstrate that 1/f noise can be induced with an applied external magnetic field. The microwave radiation reduces the modulation depth, Vpp, distorts the V - Φ curve, and decreases the field sensitivity of SQUID magnetometers.