Abstract
Films of YBa2Cu3O7−x prepared by laser ablation deposition show epitaxial growth on (100) SrTiO3 substrates with the c axis perpendicular to the plane of the film. With the magnetic field (H) parallel to the c axis, critical currents of up to 40 MA/cm2 from magnetization measurements are obtained. With H perpendicular to the c axis, various magnetization measurements with field cooling in 40 kOe indicated strong pinning effects with a calculated critical current density significantly higher than that observed in the parallel field configuration.
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