Coated conductors containing grains with big aspect ratios
S. Leitenmeier, H. Bielefeldt, G. Hammerl, A. Schmehl, C. W. Schneider, J. Mannhart
Abstract
It is shown that the critical currents of high-Tc superconducting tapes fabricated by the coated conductor technologies are enhanced considerably if grain arrangements with large effective grain boundary areas are used. Increasing the aspect ratios of the grains reduces the deleterious effects of the grain boundaries. A practical road to competitive high-Tc cables is proposed.
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