Abstract
Single crystals of the solid solution Nd 1+xBa 2−xCu 3O y have been grown from BaO-CuO flux in ZrO 2/Y crucibles. Various Nd contents could be achieved by growing in different oxygen partial pressures or by subsequent thermal treatments, which led to a spinodal decomposition. To suppress the influence of oxygen defects, first all crystals have been high-pressure oxidized several times. In a second series, the oxygen content of stoichiometric crystals have been reduced step by step by annealing in 1 bar oxygen at different temperatures. The peak effect of the critical current and the irreversibility field are studied as a function of oxygen content, Nd/Ba ratio, and Nd/Y substitution of the crystals. The influence of these different defects and their combination on the optimization of the critical current density is discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.