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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1545-1549
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume469
Issue number15-20
DOIs
Publication statusPublished - 2009 Oct 15

Keywords

  • Multilayer films
  • PrBaCuO
  • Two-dimensional APCs
  • a-axis oriented 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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