Abstract
We have studied the time and temperature dependence of trapped magnetic fields in ceramic tubes of the high- superconductor . The maximum field in a particular tube is largely a function of temperature, although decays of the form occur for fields at the maximum values. For fields away from the critical values, limits on the decay rates give Ω cm. These results are consistent with the superconductor being in a spin-glass-like state.
- Received 1 July 1987
DOI:https://doi.org/10.1103/PhysRevB.36.7244
©1987 American Physical Society