Transport and magnetic Jc of MgB2 strands and small helical coils

Details Transport and magnetic Jc of MgB2 strands and small helical coils Transport and magnetic Jc of MgB2 strands and small helical coils

2004-09-24

arxiv.org/abs/cond-mat/0409651v1

Physics

Condensed Matter

Superconductivity

8 text pages, 1 table, 4 figs

Scientific paper

10.1063/1.1875753

The critical current densities of MgB2 monofilamentary strands with and without SiC additions were measured at 4.2 K. Additionally, magnetic Jc at B = 1 T was measured from 4.2 K to 40 K. Various heat treatment times and temperatures were investigated for both short samples and small helical coils. SiC additions were seen to improve high field transport Jc at 4.2 K, but improvements were not evident at 1 T at any temperature. Transport results were relatively insensitive to heat treatment times and temperatures for both short samples and coils in the 700C to 900C range.

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