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

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)1374-1379
ページ数6
ジャーナルPhysica C: Superconductivity and its applications
469
15-20
DOI
出版ステータス出版済み - 10 15 2009

All Science Journal Classification (ASJC) codes

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

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