Abstract
Nanocrystalline superconducting MgB2 bulks were prepared by high pressure sintering of ball milled MgB2 powders. A significant improvement in the in-field critical current density Jc has been obtained in the bulk sintered at 700 °C. The value of Jc reaches as high as 105 A cm−2 at 5 K, 8 T and 104 A cm−2 at 15 K, 6 T. Intragranular defects and a large number of grain boundaries acting as pinning centers are both responsible for the higher Jc.
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.