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Effect of Nb5+ -doped YBCO Film Synthesized by Low-fluorine MOD Method

Author(s): MAO Lei, SUO Hong-Li, LIU Min, ZHANG Zi-Li, YE Shuai, MA Lin

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 28;
Issue: 9;
Start page: 956;
Date: 2013;
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Keywords: YBCO film; doping ; low-fluorine MOD method; double perovskite nanoparticles; field-property

Nb5+-doped YBCO film was fabricated successfully by low-fluorine metal organic deposition (MOD) method. The effective pinning centers in doped film are attributed to Nb-containing nanoparticles with the size of 20-30 nm. Measurement results show that the texture and critical temperature of the doped film are not influenced obviously by the nanoparticles. In addition, a significant enhancement of Jc is observed for YBCO films with nanoparticles compared to that of pure YBCO film by the field dependence of Jc values. The self-field critical current density reaches as high as 3.4 MA/cm2, and the peak pinning force (Fp) of the doped film is greatly increased than the pure one, which reaches at 3.25 GN/m3.
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