E-J characteristics and a.c. losses in a superconducting Bi(2223) hollow cylinder

T. Wakuda, T. Nakano, M. Iwakuma, K. Funaki, M. Takeo, K. Yamafuji, Y. Yamada, S. Yasuhara

研究成果: Contribution to journalArticle査読

19 被引用数 (Scopus)

抄録

E-J characteristics in a hollow cylindrical Bi(2223) bulk sample were measured by an inductive method at various temperatures (50-77 K) and various bias flux densities (0.5-5 T). Observed a.c. losses of the same sample at 50 K and 60 K showed remarkable frequency dependences which are inconsistent with the critical state model. The internal distributions of B, E and J and also the a.c. loss were estimated numerically by solving the Maxwell equations with the measured E-J characteristics. While the calculated internal distributions of B, E and J showed noticeable deviations from those predicted by the critical state model, the numerical analysis of the a.c. losses agreed quantitatively with the observed data in wide ranges of temperature and bias magnetic field. This fact indicates that we can estimate the a.c. loss of the bulk sample from the observed d.c. E-J characteristics.

本文言語英語
ページ(範囲)381-388
ページ数8
ジャーナルCryogenics
37
7
DOI
出版ステータス出版済み - 7 1997

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 物理学および天文学(全般)

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