Abstract
Superconducting YBa2Cu3O7 (YBCO) thin films were grown by the trifluoroacetates route onto metallorganic depositedLa0.7Sr0.3MnO3 (LSMO) buffer layers. The growth conditions of the LSMO films have been studied in detail andfully strained epitaxial layers with atomically flat surfaces have been obtained with local roughness∼1 nm, as determined by atomic force microscopy. We prove that this surface morphology is a keyparameter for achieving YBCO/LSMO multilayers with high critical current densities in self-field,Jcsf (77 K) = 1.8 MA cm−2. Angular pinning studies demonstrate that the defect structure is modifiedwith respect to standard TFA–YBCO films as a pronounced peak inJc is observed for at high temperatures. This indicates the presence of anisotropic defects playing animportant role in vortex pinning even at the irreversibility line stressing the suitability ofthese all-chemical TFA–YBCO/LSMO multilayers as conductive coated conductorarchitectures.
Sign-in/Register to access full text options 
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.
