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Microstructure and ...
Microstructure and flux pinning in superconducting Bi-Pb-Sr-Ca-Cu-O wires
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- Dou, S.X. (författare)
- School of Materials Science and Engineering, University of New South Wales
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- Liu, H.K. (författare)
- School of Materials Science and Engineering, University of New South Wales
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- Wang, J. (författare)
- School of Materials Science and Engineering, University of New South Wales
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- Apperley, M.H. (författare)
- School of Materials Science and Engineering, University of New South Wales
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- Sorrell, C.C. (författare)
- School of Materials Science and Engineering, University of New South Wales
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- Guo, S.J. (författare)
- Luleå tekniska universitet
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Loberg, Bengt (författare)
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- Easterling, Kenneth E. (författare)
- Luleå tekniska universitet
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(creator_code:org_t)
- 1990
- 1990
- Engelska.
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Ingår i: Physica. C, Superconductivity. - 0921-4534 .- 1873-2143. ; 172:1-2, s. 63-70
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The critical current density (Jc) of Ag-clad Bi-Pb-Sr-Ca-Cu-O wire has been measured to be 1.2×104 A/cm2 at 77 K in zero field. The high Jc is attributed to a combination of elimination of the poisoning effect of Ag on superconductivity, grain alignment, and enhancement of flux pinning. Jc-H dependence was significantly improved in the Ag-clad tape, which has a Jc of 1.0×103 A /cm2 at 77 K and 4000 Oe, while the Jc of the sintered pellet drops two orders of magnitude at only 100 Oe. A pronounced anisotropy in Jc under high magnetic field is attributed to the grain alignment. Planar defects, such as heavy stacking faults parallel to the a-b plane in the rolled tape, are considered to be effective pinning centres.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Nyckelord
- Materialteknik
- Engineering Materials
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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