R. Gross, P. Chaudhari, et al.
Physica C: Superconductivity and its applications
Paper
The microstructure of high-critical current superconducting films
Abstract
The microstructure of superconducting films that have shown high-critical current densities has been studied. The films are shown to be epitaxial and contain twins and precipitates. The main difference between these films and low current carrying samples is the absence of grain boundaries. These boundaries are therefore identified as the cause of the lower critical current in ceramic samples.
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