Abstract
The trapped field distributions on the surface of MTG YBCO disks were measured by a Hall probe automated scanning system, and exhibit a cone profile for sample A with levitation force up to 12.6 N/cm 2, whereas four peaks for sample B with 4.4 N/cm 2. However, c-axis orientations of two samples are all perpendicular to the sample surfaces according to the pole figure. For sample B, the boundaries between the sectors seem to be weak links, and the T c in the sector, which is very low, is higher than that in the boundary. The microstructure reveals that the agglomerates of non-superconductive phases occur in the boundary and the center for sample B, but do not occur in the sectors of sample B and nor in any part of sample A. So, it can be assumed that the agglomerates of non-superconductive phases in the boundary are mainly responsible for the low levitation force and trapped field with four peaks in distribution of sample B.
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.
