2002/03/06 by H L Suo, H. L. Suo, C. Beneduce +5 · 42 citations
Physics and Astronomy · #Critical current #Deformation (meteorology) #Fabrication #High-temperature superconductivity #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Superconductivity #Superconductivity in MgB2 and Alloys #Thermal stability #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1088/0953-2048/15/7/312
published in Superconductor Science and Technology 15(7), 1058-1062 (IOP Publishing) · 13 pages, 7 figures
arxiv created 2002/03/06 · openalex publication_date 2002/05/22 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Multifilamentary MgB2/Fe wires and tapes with high transport critical current densities have been fabricated using a straightforward powder-in-tube (PIT) process. After annealing, we measured transport jc values up to 1.1 * 105 A/cm2 at 4.2 K and in a field of 2 T in a MgB2/Fe square wire with 7 filaments fabricated by two-axial rolling, and up to 5 * 104 A/cm2 at 4.2 K in 1 T in a MgB2/Fe tape with 7 filaments. For higher currents these multifilamentary wires and tapes quenched due to insufficient thermal stability of filaments. Both the processing routes and deformation methods were found to be important factors for fabricating multifilamentary MgB2 wires and tapes with high transport jc values.