Abstract
In spite of its known high intragranular current density Jc, bulk YBa2Cu3O7(123) superconductors presently have a limited commercial viability due to their low current carrying capacities. Thus the problem with the bulk superconductors is widely attributed to its weak coupling at the grain boundaries. One possible solution, based on work by Jin and others, is to “melt texture” the sample so that grains align to provide a high current path through the material. But melt texturing produces other problems such as microcracking and shape distortion.To investigate the problems associated with producing high Jc bulk superconductors from the melt texturing process, we have studied the effects of modifying composition and processing conditions of the samples and examined the resulting microstructure and electrical properties.
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