Abstract
The influence of doping NbTi-based composite superconductors with extremely largecapacity substances (LHCSs) on their stability towards electromagnetic disturbances wasinvestigated both experimentally and numerically. The samples comprised ofstandard NbTi 0.85 mm diameter wires soft-soldered with copper wires of thesame diameter that contained one or several LHCS filaments. Some compounds(CeCu6,HoCu2,CeAl2,PrB6,Gd2O2S) with extremely large heat capacities at 4.2 K were introduced into the copper matrixby the powder-in-tube (PIT) method. The comparison sample (without LHCSdoping) was made by soft-soldering of the 0.85 mm diameter NbTi wire with thecopper wire without any LHCSs. The samples were placed in a transverse magneticfield and at several values of the transport current were subjected to longitudinalelectromagnetic disturbances. The typical disturbance times varied in a broad range: from50 µs to 1.2 ms. It was found that the critical current densities for the samples with LHCS dopingwere considerably higher than those for the comparison sample. It was also shown that thegain in stability remains even when the samples were directly liquid helium (LHe) cooled.
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.
