MgB2 Wires and Bulks With High Superconducting Performance
| Main Authors: | Tatiana A. Prikhna, Michael Eisterer, Matthew Rindfleisch, Mattia Ortino, Artem V. Kozyrev, Anton V. Shaternik, Volodymyr E. Shaternik, Michael Tomsic, Viktor E. Moshchil, Myroslav V. Karpets, Vladimir B. Sverdun, Semyon S. Ponomaryov, Vitaliy V. Romaka, Paul Seidel |
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| Format: | Article eJournal |
| Bahasa: | eng |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3577653 |
Daftar Isi:
- The critical current density at 4.2 and 20 K up to 15 T and the temperature dependence of the irreversible field have been studied in magnesium diboride wires and bulks prepared from boron without and with carbon addition. Structural investigations using X-ray microprobe analysis have been performed. A monofilamentary wire with a round-shaped core manufactured from boron containing 2 mol.% carbon (approximate composition of its matrix MgB1.8–2.4O0.04–0.71C0.12–0.16) demonstrated Jc(20 K, 2 T) = 105 A/cm2 , Jc(4.2 K, 15 T) = 2 × 103 A/сm 2 and Birr (20 K) = 8 T, Birr(12.5 K) = 15 T. Bulk material synthesized at 2 GPa, 600 °C, 1 h from carbon doped boron demonstrated Jc(10 K, 10 T) = 4 × 103 A/сm 2 and Jc(20 K, 6 T) = 4 × 103 A/сm 2