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Synthesis of Ag sheathed, Bi-2212 tapes by a novel liquid wicking method

✍ Scribed by R.D. Ray II; P.A. Smith; E.A. Olsen

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
671 KB
Volume
251
Category
Article
ISSN
0921-4534

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✦ Synopsis

A novel liquid wicking process has been developed to produce silver-sheathed Bi-2212 samples with oxide core thicknesses of 10-20 p~m, uniform oxide/silver interfaces, small non-superconducting phases and low porosity. This technique avoids many problems associated with oxide-powder-in-tube (OPIT) processing by exploiting the wicking behavior exhibited by Bi-Sr-Ca-Cu-O (BSCCO) liquid between silver surfaces. Critical current densities over 50 000 A/cm 2 at 4 K in self-field have been achieved with an isothermal melt process and Bi2.1Sr2Cao.9Cu20 x composition powder.

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