Development in processing of MgB2 cryo-magnet superconductors

J. G. Noudem, M. Aburras, P. Bernstein, X. Chaud, Muralidhar Miryala, Masato Murakami

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Spark Plasma Sintering is a promising rapid consolidation technique that allows a better understanding and manipulating of sintering kinetics and therefore makes it possible to obtain MgB2-based ceramics with tailored microstructures. Commercial MgB2 powders were spark plasma sintered with an applied mechanical pressure, leading to MgB2 pellets with 99% relative density. The obtained samples show a sharp superconducting transition with an onset at 38.5 K. The critical current density was measured equal to 5.6 × 104 A/cm2 at 20 K under 1 T applied field. Otherwise, the trapped field was also investigated. A 5 mm thick pellet with a 20 mm diameter prepared with optimized processing temperature demonstrated a trapped field of 1.2 T at 15 K and up to 2.5 T at 10 K.

Original languageEnglish
Article number163916
JournalJournal of Applied Physics
Volume116
Issue number16
DOIs
Publication statusPublished - 2014

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sparks
pellets
sintering
magnets
consolidation
critical current
ceramics
current density
microstructure
kinetics
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Development in processing of MgB2 cryo-magnet superconductors. / Noudem, J. G.; Aburras, M.; Bernstein, P.; Chaud, X.; Miryala, Muralidhar; Murakami, Masato.

In: Journal of Applied Physics, Vol. 116, No. 16, 163916, 2014.

Research output: Contribution to journalArticle

Noudem, J. G. ; Aburras, M. ; Bernstein, P. ; Chaud, X. ; Miryala, Muralidhar ; Murakami, Masato. / Development in processing of MgB2 cryo-magnet superconductors. In: Journal of Applied Physics. 2014 ; Vol. 116, No. 16.
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