FLUJO MAGNETICO MONOCRISTALES Single crystals YBCO Angular variation of pinning near the irreversibility temperature in single crystal Y Ba2Cu3O7−δ with splayed columnar defects Anisotropy CAMPOS MAGNETICOS Columnar defects Critical current density Crystal growth FUERZA DE ANCLAJE Flux pinning Flux pinning and creep High-TC superconductors Interplay between pinning energy and vortex interaction in YBa2Cu3O7-delta with oriented twin boundaries in tilted magnetic fields: Bitter decoration and tilt-modulus measurements Magnetic fields Magnetic flux Pinning force Repetition of the disordered pattern in successive solidifications of vortex matter observed by Bitter decoration Reproducibility of the disordered vortex structure in twinned single crystals of YBCO SUPERCONDUCTORES SUPERCONDUCTORES DE TC ALTO Superconductors Vortex dynamics in Bi2Sr2CaCu2O8+δ single crystals with planar defects