Effect of F/Ba ratio of precursor solution on the properties of solution-processed YBCO superconducting films

Weibai Bian, Yuanqing Chen, Wenhuang Huang, Gaoyang Zhao, Junji Nishii, Hideo Kaiju, Masaya Fujioka, Lingwei Li, Na Li, Fuxue Yan

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

YBa2Cu3O7−x (YBCO) thin films (with thickness of 220–230 nm) and thick films (with thickness of 1.1–1.2 µm) were prepared using low fluorine solutions with different F/Ba ratios (F/Ba=1–4.5). The effect of F/Ba ratio on the properties of the films was systematically investigated. The results showed that films derived from solutions with F/Ba<2, regardless of whether they were thin or thick, showed poor superconductivity due to the formation of BaCO3 intermediate phase. When solutions with F/Ba≥2 were used, the superconductivity of as-prepared YBCO films was related to not only the film thickness, but also the F/Ba ratio in the solution. It was found that, for thick films derived from F/Ba>2 solutions, the formation of BaF2/BaOF phase was retarded by the decomposition of Ba1−xYxF2+x (BYF) intermediate phase. We also found that extra fluorine in the solution resulted in a large number of impurities and a-axis grains in the thick films, degrading the film superconductivity. F/Ba=2 was the optimal ratio in the solution to fabricate high-Jc YBCO thick films.

Original languageEnglish
Pages (from-to)8433-8439
Number of pages7
JournalCeramics International
Volume43
Issue number11
DOIs
Publication statusPublished - 2017 Aug 1
Externally publishedYes

Fingerprint

Superconducting films
Thick films
Fluorine
Superconductivity
Impurities
Decomposition
Thin films

Keywords

  • Films
  • Low-fluorine solution
  • Superconductivity
  • YBaCuO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Effect of F/Ba ratio of precursor solution on the properties of solution-processed YBCO superconducting films. / Bian, Weibai; Chen, Yuanqing; Huang, Wenhuang; Zhao, Gaoyang; Nishii, Junji; Kaiju, Hideo; Fujioka, Masaya; Li, Lingwei; Li, Na; Yan, Fuxue.

In: Ceramics International, Vol. 43, No. 11, 01.08.2017, p. 8433-8439.

Research output: Contribution to journalArticle

Bian, W, Chen, Y, Huang, W, Zhao, G, Nishii, J, Kaiju, H, Fujioka, M, Li, L, Li, N & Yan, F 2017, 'Effect of F/Ba ratio of precursor solution on the properties of solution-processed YBCO superconducting films', Ceramics International, vol. 43, no. 11, pp. 8433-8439. https://doi.org/10.1016/j.ceramint.2017.03.193
Bian, Weibai ; Chen, Yuanqing ; Huang, Wenhuang ; Zhao, Gaoyang ; Nishii, Junji ; Kaiju, Hideo ; Fujioka, Masaya ; Li, Lingwei ; Li, Na ; Yan, Fuxue. / Effect of F/Ba ratio of precursor solution on the properties of solution-processed YBCO superconducting films. In: Ceramics International. 2017 ; Vol. 43, No. 11. pp. 8433-8439.
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AU - Kaiju, Hideo

AU - Fujioka, Masaya

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