Rapid Synthesis of YBCO Thick Superconducting Films by Low Fluorine TFA-MOD Method

doi:10.3724/SP.J.1077.2010.00971

Abstract

Abstract:

To elevate the productivity of high critical current YBCO superconducting films by TFA-MOD processing, traditional trifluoroacetate (TFA) was replaced by acrylic acetate partially. Since the fluorine content in precursor solution was decreased, the ramping rate in decomposition process reached 300℃/h. Meanwhile the atmosphere was also adjusted to avoid the fatal effect of diethanolamine (DEA), and to increase thickness of YBCO film. By increasing the maximum of DEA addition to 0.75g/5mL, the thickness of film reaches 1μm. While some a-axis grains dispersed on the film surface are probably ascribed to the rise of thickness, the YBCO film has good interior microstructures overall. As a result, the highest critical current density is 3.5MA/cm² and the critical temperature is 90K as well.

Key words: YBCO, TFA-MOD, acrylic acid, diethanolamine

CLC Number:

TM26

TANG Xiao, SUO Hong-Li, YE Shuai, LIU Min, Wu Zi-Ping, ZHOU Mei-Ling. Rapid Synthesis of YBCO Thick Superconducting Films by Low Fluorine TFA-MOD Method[J]. Journal of Inorganic Materials, 2010, 25(9): 971-974.

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Rapid Synthesis of YBCO Thick Superconducting Films by Low Fluorine TFA-MOD Method

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