A tape travelling velocity of a hundred–a hundred and eighty m h−1 may be achieved with a gradual temperature profile when passing via the deposition zone, which could be very beneficial for the progress of the REBCO layer. Taking advantage of the liquid section growth mode, several compositions of superconducting films with a thickness within the vary of 1–2.5μm have been grown with high development charges of over 40 nm s−1. Furthermore, the microstructures and superconducting efficiency were investigated intimately. Based on these studies, superconducting tapes with piece lengths of up to 500 meters have been developed.

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