Effects of thickness on superconducting properties and structures of Y2O3/BZO-doped MOD-YBCO films

Fa Zhu Ding*, Hong Wei Gu, Hong Yan Wang, Hui Liang Zhang, Teng Zhang, Fei Qu, Ze Bin Dong, Wei Wei Zhou

*Corresponding author for this work

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Abstract

We report the thickness dependence of critical current density (Jc) in YBa2Cu3O7-x (YBCO) films with BaZrO3 (BZO) and Y2O3 additions grown on single crystal LaAlO3 substrates by metalorganic deposition using trifluoroacetates (TFA-MOD). Comparing with pure YBCO films, the Jc of BZO/Y2O3-doped YBCO films was significantly enhanced. It was also found that with the increase of the thickness of YBCO film from 0.25 μm to 1.5 μm, the Ic of BZO/Y2O3-doped YBCO film increased from 130 A/cm to 250 A/cm and yet Jc of YBCO film decreased from 6.5 MA/cm2 to 2.5 M A/cm2. The thick BZO/Y2O3-doped MOD-YBCO film showed lower Jc, which is mainly attributed to the formation of a-axis grains and pores.

Original languageEnglish
Article number057401
JournalChinese Physics B
Volume24
Issue number5
DOIs
Publication statusPublished - 1 May 2015
Externally publishedYes

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Ding, F. Z., Gu, H. W., Wang, H. Y., Zhang, H. L., Zhang, T., Qu, F., Dong, Z. B., & Zhou, W. W. (2015). Effects of thickness on superconducting properties and structures of Y2O3/BZO-doped MOD-YBCO films. Chinese Physics B, 24(5), Article 057401. https://doi.org/10.1088/1674-1056/24/5/057401