Superconducting Properties of MgB2 Bulk Shaped by Spark Plasma Sintering

MgB2 bulk superconductors were shaped by Spark Plasma Sintering (SPS) process and the superconducting properties were measured. The obtained materials were 98% dense. Trapped field higher than 1.4 T was measured at 20K. Otherwise, the possibility to use MgB2 for magnetic levitation has been investig...

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Bibliographic Details
Main Authors: Noudem, J.G., Dupont, L., Gozzelino, L., Bernstein, P.
Format: Conference Proceeding
Language:English
Subjects:
Bulk MgB2 superconductor
densification
Levitation force
Spark Plasma Sintering
trapped field
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Summary:MgB2 bulk superconductors were shaped by Spark Plasma Sintering (SPS) process and the superconducting properties were measured. The obtained materials were 98% dense. Trapped field higher than 1.4 T was measured at 20K. Otherwise, the possibility to use MgB2 for magnetic levitation has been investigated. The levitation force was investigated below 35K. The results show that the SPS process allows to produce dense samples with enhanced superconductor characteristics as a result of improved grains connection and better densification of the bulk MgB2 superconductors, which could be a viable variant for magnetic levitation applications and/or as cryo-magnets.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2016.01.088