Preparation of HgBaCaCuO polycrystals and silver sheathed tapes by a two-zone technique
- National Magnetic Field Lab., Tallahassee, FL (United States)
- National High Magnetic Field Lab., Tallahassee, FL (United States)
The HgBa{sub 2}Ca{sub n{minus}1}Cu{sub n}O{sub x} (n=1, 2, 3) superconductors exhibit excellent superconducting properties, especially above 77 K. The production of a technical HgBa{sub 2}Ca{sub n{minus}1}Cu{sub n}O{sub x} conductor not only requires the synthesis of bulk material with large critical current density (i.e., strong flux pinning and minimal weak links), but also the ability to do so in a form that satisfies the engineering constraints of superconducting applications. Preliminary studies of HgBa{sub 2}CuO{sub 4+x}/Ag wires have demonstrated that silver is a chemically compatible sheath material. Also, the chemical stability issue has been resolved with the partial substitution of rhenium for mercury. Here the authors present the results of their study of the phase formation and chemical stability of Hg{sub 1{minus}{delta}}Re{sub {delta}}Ba{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+x} as well as the preliminary results of a HgBa{sub 2}CuO{sub 4+x}/Ag wire study, and thus indicate the technical potential of the Hg-based superconductors.
- OSTI ID:
- 482073
- Report Number(s):
- CONF-950722--
- Journal Information:
- Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN ACYEAC; ISSN 0065-2482
- Country of Publication:
- United States
- Language:
- English
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