ISSN:
1573-482X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract For the first time a simple sol-gel method has been developed for the preparation of [YBa2Cu3O x -Ag] composites using nitrates of Y, Ba, Cu, and Ag. For the two composites (with 10 and 20 wt% Ag), the electrical resistivities and magnetic susceptibilities (both alternating and direct current) show critical temperatureT c (zero) around 90–91 K. The X-ray diffraction studies indicate no major change of lattice parameters for the orthorhombic phase. The critical current density,J c, is found to be around 200 A cm−2 at zero field and 80 K. The degradation ofT c of the composites in presence of water is also very low, similar to the previous observations. This sol-gel method could be used for the large-scale production of superconducting composite powders necessary for drawing wires/tapes or targets for sputtering.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00695727
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