Effects of the APC materials on c-axis correlated pinning effects in a-axis oriented Y123/2D APC multilayer films

M. Takamura, M. Mukaida, S. Horii, A. Ichinose, R. Kita, M. Namba, Satoshi Awaji, Kazuo Watanabe, K. Matsumoto, Y. Yoshida, R. Teranishi, K. Yamada, N. Mori

研究成果: Article査読

3 被引用数 (Scopus)

抄録

For a-axis oriented and c-axis in-plane aligned YBa2Cu3O7-δ/artificial pinning center (Y123/APC) alternately-layered thin films, effects of the APC materials on the multilayer structures are discussed. Pr123, (Y1-xPrx)123 and Gd2CuO4(Gd214) were used as APCs. The multilayer structure was observed for Y123/Pr123 films and Y123/Gd214 films. However, some grains are also grown in the Y123/Gd214 film. For the Y123/Pr123 multilayer film, each Pr123 layer act as two-dimensional APCs (2D APCs) in the magnetic field angular dependences of the critical current density. The growth mechanism of the multilayer structure in the Y123/2D APC films is discussed by a transmission electron microscopy and an atomic force microscope. It is found that two conditions are needed to obtain the c-axis correlated pinning effects by 2D APC in the a-axis oriented and c-axis in-plane aligned Y123/APC multilayer films: the same structure as Y123; Y-free APC materials.

本文言語English
ページ(範囲)1545-1549
ページ数5
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 15

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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