2004/08/10 by M.D. Sumption, M. D. Sumption, M. Bhatia +10 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Analytical Chemistry (journal) #Chemistry #Condensed matter physics #Critical current #Field (mathematics) #Flux (metallurgy) #Flux pinning #Magnesium Alloys: Properties and Applications #Magnetic field #Materials science #Metallurgy #Physics #Physics of Superconductivity and Magnetism #Pinning force #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.1088/0953-2048/17/10/017
published as Superconductor Science and Technology 2004 · 15 pages, 1 table, six figs
openalex publication_date 2004/08/10 · arxiv created 2004/10/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The critical current density ( J c ) was measured at 4.2 K for MgB 2 strands with and without SiC additions. In some cases measurements were performed on long (1 m) samples wound on barrels, the transport results being compared to the results of magnetic measurements. Most measurements were performed on short samples in fields of up to 18 T. It was found that in situ processed strands with 10% SiC additions heat treated at 700–800 °C showed improved irreversibility fields ( H r ) and bulk pinning strengths ( F p ) as compared to control samples; an increase in H r of 1.5 T was noted. Heat treatment to 900 °C gave even larger improvements, with H r reaching 18 T and F p values maximizing at 20 GN m −3 .