Magneto - transport characterization of Dy123 monodomain superconductors

Details Magneto - transport characterization of Dy123 monodomain superconductors Magneto - transport characterization of Dy123 monodomain superconductors

2004-07-17

arxiv.org/abs/cond-mat/0407463v1

Physics

Condensed Matter

Superconductivity

18 pages, with 8 figures; 4 color figuresx missing (much memory needed)

Scientific paper

The following report considers textured materials of the DyBa2Cu3O7 type seeded with a Nd123 seed as initiator. They are grown with an excess 20% Dy211 phase on a Dy2O3 substrate. We report chemical characterizations, electrical resistivity, thermoelectric power and thermal conductivity over a broad temperature range as a function of an applied magnetic field up to 6 T. We show that specific features appear on the magneto thermal transport properties different in these materials from those found in single crystals and polycrystalline samples. We propose that two vortex regimes can be distinguished in the mixed phase, - due to the intrinsic microstructure. We calculate the viscosity, entropy and figure of merit of the samples.

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