Abstract
Samples of Bi2Sr2CaCu2AgxOy with small Ag additions (x = 0.05, 0.1 and 0.2) have been prepared by the classical solid state reaction method. The effect of Ag has been investigated using electrical resistivity, scanning electron microscopy, XRD, mechanical and dc-magnetization techniques. It has been found that very small amounts of Ag are enough to improve the physical and magnetic properties of the samples. The best Jc values obtained from dc magnetization measurement (M-H), employing the well known Bean’s critical model, have been obtained for the Bi2Sr2CaCu2Oy samples with 0.05 Ag addition, reaching about 3000 A/cm2 at 15 K, which is a very high value for bulk materials with randomly oriented grains.
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