Oxygen diffusivity in melt-processed SmBCO and YBCO bulk-superconductors

T. Yamada, H. Ikuta, M. Yoshikawa, Y. Yanagi, Y. Itoh, Tetsuo Oka, U. Mizutani

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We studied the diffusivity of oxygen in melt-processed Sm-Ba-Cu-O (SmBCO) and Y-Ba-Cu-O (YBCO) bulk-superconductors. The chemical diffusion coefficients of oxygen estimated from the experimental results show that the addition of silver suppresses the oxygen diffusivity in melt-processed bulk-superconductors. On the other hand, the diffusion coefficients of SmBCO/Ag and YBCO/Ag were almost identical. We discuss the effect of Ag addition on the oxygen diffusivity by examining the microstructure of the samples. It is also shown that annealing at a lower temperature than YBCO is necessary to extract the high potential of SmBCO.

Original languageEnglish
Pages (from-to)713-717
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume378-381
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Oct 1
Externally publishedYes

Fingerprint

Superconducting materials
diffusivity
Oxygen
oxygen
diffusion coefficient
Silver
silver
microstructure
annealing
Annealing
Microstructure
Temperature

Keywords

  • Effect of Ag addition
  • Melt-processed superconductor
  • Oxygen diffusivity
  • Sm-Ba-Cu-O
  • Y-Ba-Cu-O

ASJC Scopus subject areas

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

Cite this

Oxygen diffusivity in melt-processed SmBCO and YBCO bulk-superconductors. / Yamada, T.; Ikuta, H.; Yoshikawa, M.; Yanagi, Y.; Itoh, Y.; Oka, Tetsuo; Mizutani, U.

In: Physica C: Superconductivity and its Applications, Vol. 378-381, No. PART 1, 01.10.2002, p. 713-717.

Research output: Contribution to journalArticle

Yamada, T, Ikuta, H, Yoshikawa, M, Yanagi, Y, Itoh, Y, Oka, T & Mizutani, U 2002, 'Oxygen diffusivity in melt-processed SmBCO and YBCO bulk-superconductors', Physica C: Superconductivity and its Applications, vol. 378-381, no. PART 1, pp. 713-717. https://doi.org/10.1016/S0921-4534(02)01527-7
Yamada, T. ; Ikuta, H. ; Yoshikawa, M. ; Yanagi, Y. ; Itoh, Y. ; Oka, Tetsuo ; Mizutani, U. / Oxygen diffusivity in melt-processed SmBCO and YBCO bulk-superconductors. In: Physica C: Superconductivity and its Applications. 2002 ; Vol. 378-381, No. PART 1. pp. 713-717.
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AU - Ikuta, H.

AU - Yoshikawa, M.

AU - Yanagi, Y.

AU - Itoh, Y.

AU - Oka, Tetsuo

AU - Mizutani, U.

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