Abstract
A systematic study of flux pinning and the thermodynamic critical field has been undertaken to determine whether is a central factor determining the critical current Materials that have a fairly wide temperature interval of thermodynamic reversibility are selected so that the thermodynamic critical field can be confidently extrapolated into the irreversible regime. is found to scale with For a given sample, the vs curves are close to a universal function as temperature changes. In addition, the peak in the pinning force curve also scales with for a wide variety of samples having quite different transition temperatures.
- Received 5 November 1998
DOI:https://doi.org/10.1103/PhysRevB.60.3603
©1999 American Physical Society