Critical currents in magnetically pressed MgB2 rods

Using a magnetic compression method a 2.3 mm diameter superconducting MgB2 rod was synthesized in a stainless steel tube. After the compression the MgB2 density inside the tube reached d = 2.45 g cm-3, i.e. very near to the theoretical value 2.62 g cm-3. At T = 4.2 K and B = 0.5 T the quench current...

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Bibliographic Details
Published in:Superconductor science & technology 2004-05, Vol.17 (5), p.S274-S275
Main Authors: Anan’ev, S P, Grinenko, V A, Keilin, V E, Krasnoperov, E P, Kovalev, I A, Kruglov, S L, Levit, P A, Stoliarov, V A
Format: Article
Language:English
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Summary:Using a magnetic compression method a 2.3 mm diameter superconducting MgB2 rod was synthesized in a stainless steel tube. After the compression the MgB2 density inside the tube reached d = 2.45 g cm-3, i.e. very near to the theoretical value 2.62 g cm-3. At T = 4.2 K and B = 0.5 T the quench current reached 870 A. The critical current density versus temperature was determined from electric and magnetic measurements.
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/17/5/035