Abstract
The vortex liquid in melt-textured YBa2Cu3O7 samples having different contents of randomly distributed nanometric Y2BaCuO5 (211) inclusions has been studied by means of the pseudo-dc-flux-transformer contact configuration in magnetic fields up to 9 T parallel to the sample c-axis. When current is injected through oneab sample face, a scaling between the voltages measured on oppositeab faces is found in the temperature range Ti<T<T*. This scaling is a manifestation of long range c-axis vortex correlation up to T*. It is shown, however, that the random disorder added by 211 particles results in an increase of vortex cutting when compared to single crystals.
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