Abstract
A tilt angle dependence of vortex structure was studied at low-angle grain boundaries (LAGBs) in films. The 2° tilt LAGB did not degrade of the film in a self-field, demonstrating the existence of Abrikosov vortices at the 2° LAGB. The magnetic field dependence of the flux flow resistance indicated the existence of Abrikosov Josephson vortices at the 5° tilt LAGB. At the 10° tilt LAGB, a Josephson junction behavior was observed in a self-field, indicating the existence of Josephson vortices. The influence of the LAGBs on critical current density was understood based on these vortices.
- Received 16 August 2007
DOI:https://doi.org/10.1103/PhysRevB.77.132502
©2008 American Physical Society