Irreversibility Field and Flux Pinning in MgB2 with and Without SiC Additions
arXiv:cond-mat/0410301 · doi:10.1088/0953-2048/17/10/017
Abstract
Critical current density was measured at 4.2 K for MgB2 strands with and without SiC additions. In some cases measurements were performed on longer (1 m) samples wound on barrels, and these were compared to magnetic measurements. Most measurements were performed on short samples at higher fields (up to 18 T). It was found that in-situ processed strands with 10% SiC additions HT at 700-800C show improved Hr and Fp values as compared to control samples, with Hr increasing by 1.5 T. At 900C even larger improvements are seen, with Hr reaching 18 T and Fp values maximizing at 20 GN/m3.
arXiv comment15 pages, 1 table, six figs
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- The critical current density of advanced internal-Mg-diffusion-processed MgB2 wires
- Solenoidal Coils Made from Monofilamentary and Multifilamentary MgB2 strands
- Transport and magnetic Jc of MgB2 strands and small helical coils
- Enhanced critical current density of MgB2 superconductor synthesized in high magnetic fields
- Influence of Strand Design, Boron Type, and Carbon Doping Method on the Transport Properties of Powder-in-Tube MgB2-XCX Strands
- Effect of nano-C doping on the in-situ processed MgB2 tapes