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, S. Awaji, K. Watanabe

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1418-1421
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
469
15-20
DOI
出版ステータスPublished - 2009 10月 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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