Effects of Sn-doping on JC-B properties and crystalline structure for YBCO films by advanced TFA-MOD method

Y. Miyanaga, R. Teranishi, K. Yamada, N. Mori, M. Mukaida, T. Kiss, M. Inoue, K. Nakaoka, M. Yoshizumi, T. Izumi, Y. Shiohara, M. Nanba, Satoshi Awaji, Kazuo Watanabe

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Abstract

To improve JC properties in a magnetic field (JC-B) of YBa2Cu3O7-δ(YBCO) films by a TFA-MOD (trifluoroacetates metal organic deposition) method, we fabricated YBCO films with SnO2-doping as artificial pinning centers and investigated the superconducting properties and the crystalline structures. TFA-MOD is expected as a cost-effective method with a non-vacuum system to fabricate YBCO films with high superconducting properties. However, YBCO films have problems that JC decreases in a magnetic field (B). In this study, the TFA solutions with SnO2 for pinning centers were used as starting materials. In the transmission electron microscope image, existence of second phase particles with size of 20-30 nm has been observed in the YBCO film. These nano-particles contained Sn-element and distributed randomly in the film. The JC/JC (self field) values of the SnO2-doped YBCO films were enhanced in all magnetic field angles. Therefore it is considered that 3D pinning centers of Sn-compounds were introduced into YBCO film.

Original languageEnglish
Pages (from-to)1418-1421
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume469
Issue number15-20
DOIs
Publication statusPublished - 2009 Oct 15

Keywords

  • Flux pinning
  • TFA-MOD
  • YBaCuO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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    Miyanaga, Y., Teranishi, R., Yamada, K., Mori, N., Mukaida, M., Kiss, T., Inoue, M., Nakaoka, K., Yoshizumi, M., Izumi, T., Shiohara, Y., Nanba, M., Awaji, S., & Watanabe, K. (2009). Effects of Sn-doping on JC-B properties and crystalline structure for YBCO films by advanced TFA-MOD method. Physica C: Superconductivity and its applications, 469(15-20), 1418-1421. https://doi.org/10.1016/j.physc.2009.05.049