Flux pinning property in a single crystal NdBa2Cu 3Oy superconductor

M. N. Hasan, T. Kurokawa, M. Kiuchi, E. S. Otabe, T. Matsushita, N. Chikumoto, T. MacHi, M. Muralidhar, M. Murakami

研究成果: Conference article査読

2 被引用数 (Scopus)


The critical current density Jc and the apparent pinning potential U0 * in a single crystal NdBa2Cu 3Oy superconductor which shows a broad peak effect are investigated by measuring a DC magnetization and its relaxation. The field-induced pinning mechanism does not explain the temperature dependence of peak field Bp and dip field Bd. The experimental results of Jc and U0* are compared with the theoretical analysis based on the flux creep-flow model, taking the distribution of the flux pinning strength into account. The number of flux lines in the flux bundle (g2), the most probable value of pinning strength (Am) and distribution width (σ2) are determined so that a good fit is obtained between the experimental and theoretical results. The behavior of these parameters is discussed in correspondence to the disorder transition of flux lines.

ジャーナルPhysica C: Superconductivity and its applications
出版ステータスPublished - 2005 10月 1
イベントProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
継続期間: 2004 11月 232004 11月 25

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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