Effect of fine-particle NbC additions on the structure and superconducting properties of (Bi,Pb)(2)Sr(2)Ca(2)Cu(3)O(10+x) ceramicsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:(Bi,Pb)-2223 superconducting ceramics prepared by heat treatment at 840 degreesC and containing 0.1 to 0.5 wt % fine-particle NbC additions were characterized by microstructural analysis, x-ray diffraction, and magnetic susceptibility measurements. The introduction of 0.1 wt % NbC was found to raise the 77-K zero-field critical current density by a factor of 2 to 3, reduce the superconducting transition width, and slightly increase T(c).