K. Frikach et al., MAGNETIC-RELAXATION AND COLLECTIVE CREEP IN A GRAIN-ALIGNED SAMPLE OFYBA2CU3O7-DELTA, Physica. C, Superconductivity, 282, 1997, pp. 2253-2254
Measurements of creep of magnetic flux lines are conducted in a c axis
grain-aligned sample of YBa2Cu3O7-delta within the temperature region
from 4.2 to 90K, for fields ranging from 0 to GT. The effective pinni
ng energy U-0 and the power mu are obtained.