Abstract
We investigated the influence of fullerene (C60) addition on the superconducting parameters ofMgB2 bulk samples obtained by spark plasma sintering (SPS). It was found that 1.5 wt%C60 addition leads to the reduction of the critical temperature by a few K,whereas the magnetically determined critical current density increasesby approximately one order of magnitude in an applied magnetic fieldH = 70 kOe attemperature T = 10 K. This indicates substitution of B by C inC60 addedMgB2 processed by SPS, contrary to some data reported in the literatureobtained using conventional methods. For our relatively large specimens,the occurrence of macroscale flux jumps was observed over a wide (H, T) domain. The relaxation of the irreversible magnetization suggests that themacroscale flux jumps transform into microscale flux jumps with increasingH andT.
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.
