INTERGRANULAR PROPERTIES OF (Bi1.6Pb0.4)(Sr1.8Ba0.2)(Ca1-xErx)2Cu3Oy COMPOUNDS

The intergranular properties of (Bi1.6Pb0.4)(Sr1.8Ba0.2)(Ca1-xErx)2Cu3Oy ceramics, with x = 0.00; 0.002; 0.005; 0.010; 0.015; 0.020, were studied using electrical resistivity and ac susceptibility measurements at zero dc magnetic field. The intergranular Jc was determined from ac susceptibility data...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2000-01, Vol.341-348, p.1451-1452
Main Authors: Deac, I G, Pop, A V, Ilonca, G, Deltour, R
Format: Article
Language:English
Online Access:Get full text
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Summary:The intergranular properties of (Bi1.6Pb0.4)(Sr1.8Ba0.2)(Ca1-xErx)2Cu3Oy ceramics, with x = 0.00; 0.002; 0.005; 0.010; 0.015; 0.020, were studied using electrical resistivity and ac susceptibility measurements at zero dc magnetic field. The intergranular Jc was determined from ac susceptibility data by varying field amplitude Hac in the range from 0.1 to 20 Oe. Results were discussed in terms of SIS-and SNS-type models for granular superconductors. Analysis of the temperature dependencies of the intergranular current densities suggests that the superconducting grains are connected by normal metal interfaces. 5 refs.
ISSN:0921-4534
DOI:10.1016/S0921-4534(00)01013-3