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Open Access Fabrication of Bi-2223 superconducting thick films via a non-vacuum method on silver foil substrates

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In this study, high temperature superconducting (Bi,Pb)2Sr2Ca2Cu3O x (Bi-2223) films about 8 μm thick were fabricated by using a non-vacuum method. The precursor films was dip-coated on silver foil substrates and heat-treated. To prevent the evaporation of Bi and Pb at high temperatures, a "powder-in-foil" method was used. The heat treatment consisted of two steps with an intermediate pressing process, similar to the powder-in-tube (PIT) technique for Bi-2223/Ag superconducting tapes. The optimized samples showed a critical current density of about 29 kA/cm2 (77 K, self-field), which was comparable to that of commercial PIT Bi-2223/Ag tapes. This study provided an efficient new method to fabricate Bi-2223 long wires capable to carry considerable superconducting current.
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Document Type: Research Article

Publication date: October 1, 2016

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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