Abstract
Superconducting YBa 2Cu 3O 7−δ films were prepared by DC-sputtering on single crystal SrTiO 3 substrates. The angular dependence of the magnetoresistance and the critical current density of these films were measured for different magnetic fields and temperatures. The anisotropy of the dissipation was investigated in high as well as in low magnetic fields. The results show the measured properties of the YBa 2Cu 3O 7−δ films strongly dependent on the tilt angle θ between the magnetic field and the ab-plane of the film due to the anisotropy of the layered superconductor in the mixed state. Furthermore the φ-dependence is discussed with φ being the angle between the current direction and the θ-rotation plane.
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