Constricted diamagnetic hysteresis loops observed for the high T c superconductors
- 15 April 1988
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (8) , 4179-4181
- https://doi.org/10.1063/1.341127
Abstract
Magnetic hysteresis loops, ac susceptibility, and resistivity measurements have been made on a Ba2 YCu3 O7−x‐type high‐ Tc superconductor. The shape of the hysteresis loops well below Tc are reminiscent of constricted hysteresis loops observed in certain ferromagnetic materials which are usually associated with magnetic aftereffects. Similar dynamic effects, with a time constant on the order of 10 s at 40 K, are shown to be present in the superconducting material. This dynamic magnetic viscosity effect is in addition to the flux creep observed for longer time periods.This publication has 8 references indexed in Scilit:
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