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Critical Current Densities and n-Values of MgB2 Conductors for SMES, MRI, and Low AC Loss Applications
- Source :
- IEEE Transactions on Applied Superconductivity; August 2023, Vol. 33 Issue: 5 p1-4, 4p
- Publication Year :
- 2023
-
Abstract
- Multifilamentary MgB<subscript>2</subscript> strands (filament numbers 36 to 114) prepared by the in-situ power-in-tube (PIT) route with carbon doping contents of 0, 2, and 3.2% were wound on barrels for transport J<subscript>c</subscript> and n-value measurement at 4.2 K in fields of up to 12 T. The strand and gauge lengths were 1 m and 0.5 m. Heat treatments at 675 °C and 650 °C centered around the melting point of Mg (650 °C) and both utilized the liquid-solid reaction. A pair of strands, with and without 2% C doping exhibited the J<subscript>c</subscript> (B) crossover effect. Studied were the dependencies of J<subscript>c</subscript> on field strength, dopant concentration, and cabling and the dependence of n-value on field strength.
Details
- Language :
- English
- ISSN :
- 10518223 and 15582515
- Volume :
- 33
- Issue :
- 5
- Database :
- Supplemental Index
- Journal :
- IEEE Transactions on Applied Superconductivity
- Publication Type :
- Periodical
- Accession number :
- ejs62601765
- Full Text :
- https://doi.org/10.1109/TASC.2023.3247375