Microstructure and superconducting properties of hot isostatically pressed MgB2

Trevor Shields, Kenji Kawano, Donna Johnson, John Abell

Research output: Contribution to journalArticle

66 Citations (Scopus)


Bulk samples of MgB2 have been formed by hot isostatic pressing (HIPping) of commercial powder at 100 MPa and 950 degreesC. The resulting material is 100% dense with a sharp superconducting transition at 37.5 K. Microstructural studies have indicated the presence of small amounts of second phases within the material, namely MgO- and B-rich compositions, probably MgB4. Magnetization measurements performed at 20 K have revealed values of J(c) = 1.3 x 10(6) A cm(-2) at zero-field and 9.3 x 10(5) A cm(-2) at 1 T. Magneto-optical (MO) studies have shown direct evidence for the superconducting homogeneity and strong intergranular current flow in the material.
Original languageEnglish
Pages (from-to)202-205
Number of pages4
JournalSuperconductor Science & Technology
Issue number2
Early online date9 Jan 2002
Publication statusPublished - 1 Feb 2002


Dive into the research topics of 'Microstructure and superconducting properties of hot isostatically pressed MgB2'. Together they form a unique fingerprint.

Cite this