Title: Effect of the layer thickness on Nb3Al superconducting wires
Abstract: Abstract The Nb/Al composite wires with various average thicknesses of niobium layer, from 43 to 300 nm, were fabricated by the method using aluminum-clad niobium foils as a starting material and the dependency of the critical current density J c on the niobium layer thickness was studied. Even at a thickness of 43 nm, J c gave no tendency for saturation. In contrast, the transition temperature was saturated at about 17K. Although the obtained J c values exceeded the best ones for the Nb/Al composite wires fabricated by the powder metallurgy process and niobium-tube method, they were still far from the results for stoichiometric Nb 3 Al. The J c dependency on the niobium layer thickness was compared with the data in other methods and discussed in detail.
Publication Year: 1990
Publication Date: 1990-09-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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