Microstructures of REBa2Cu3Oy films containing artificial pinning centers of various dimensions

A. Ichinose, P. Mele, K. Matsumoto, H. Kai, M. Takamura, K. Yamada, M. Mukaida, S. Horii, S. Funaki, Y. Ichino, Y. Yoshida, R. Kita

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


To improve critical current density, Jc, under magnetic fields and at 77 K, some pinning centers have been introduced into REBa2Cu3Oy films (RE: rare earth elements). Pinning centers have been distinguished as one-dimensional, two-dimensional or three-dimensional artificial pinning centers (APCs) on the basis of their structural dimension. One-dimensional and three-dimensional APCs have considerably improved Jc as a result of our efforts. For example, BaZrO3 or BaSnO3 nanorods are significantly effective one-dimensional APCs. It is found that the nanorod structure can be controlled and the Jc-B properties vary depending on the nanorod structure. Moreover, the principle of two-dimensional APCs, which have been successfully designed in a multilayer structure, has been clarified. In this paper, the microstructures of the one- and two-dimensional APCs, such as the nanorods and the boundaries, are described in particular. The Jc-B properties also are discussed.

Original languageEnglish
Pages (from-to)1374-1379
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue number15-20
Publication statusPublished - 2009 Oct 15
Externally publishedYes


  • Artificial pinning centers
  • High-T superconducting films
  • Microstructures
  • TEM

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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