Abstract
Stoichionetric YBa 2 Cu 3 O 7- x thin superconducting films were deposited on copper foils with intermediate buffer layers of Ti and MgO using RF magnetron sputtering. Rapid thermal annealing was applied to the films and polycrystalline c-axis oriented films were obtained. The speed of heating was found to correlate with the grain size in the coating. The critical current density and transition temperature were measured under magnetic field both parallel and perpendicular to the substrate. The films with large-grain structure showed remarkable resistance to the magnetic field while small-grain structures were not resistant. The highest zero-resistance transition temperature obtained after thermal annealing was 85.9 K and a critical current density at 78 K without magnetic field was 15 400 A/cm 2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
