Physics – Condensed Matter – Superconductivity
Scientific paper
2006-03-29
Physics
Condensed Matter
Superconductivity
Scientific paper
Carbon-doped magnesium diboride was fabricated from pre-reacted pure MgB2 by mechanical alloying. The sample set had excellent critical current densities Jc(8T,4.2K) ranging from 15-60 kA/cm2, depending on composition. Magneto-optical imaging detected regions up to 0.5 mm in size which were nearly 100% dense with Jc 2-6 times that of the matrix. Evaluation of resistivity curves using the Rowell method predicts that only 10-50% of the cross sectional area carries the normal state measurement current, suggesting that considerable increases in Jc in these ~80% dense MgB2 samples would be possible with complete grain and particle connectivity.
Hellstrom E. E.
Larbalestier David C.
Mungall R. J.
Polyanskii Anatolii A.
Senkowicz B. J.
No associations
LandOfFree
Resistivity and Magneto-Optical Evidence for Variable and Incomplete Connectivity in Dense, High Critical Current Density C-alloyed Magnesium Diboride does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Resistivity and Magneto-Optical Evidence for Variable and Incomplete Connectivity in Dense, High Critical Current Density C-alloyed Magnesium Diboride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resistivity and Magneto-Optical Evidence for Variable and Incomplete Connectivity in Dense, High Critical Current Density C-alloyed Magnesium Diboride will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-585825