Abstract
We studied microstructure and superconducting properties of melt-processed RE123 (REY and Dy) bulk superconductors with a large amount of BaCeO3 addition. The melttextured bulk samples with compositions of Y123 + xBaCeO 3 (x0.05-0.4) and 0.5 wt% of Pt were fabricated in air. The BaCeO3 particles with the diameter of 1-2 νm were trapped in the melt-textured samples. The critical current density (Jc) in a low field region increased with the amount of BaCeO3 inclusions. This suggests the BaCeO3 particles act as effective flux pinning centers, as well as Y211 particles in conventional melt-textured Y-Ba-Cu-O bulk materials. We found that the size of BaCeO3 particles could be reduced by substituting Zr on Ce site. The Y123 bulk sample with 30 mol% of Ba(Ce0.75Zr0.25)O3 and 0.5 wt% Pt showed a high Jc value of 110 kA/cm2 at 77 K. The Dy123 bulk samples dispersed BaCeO3 and Ba(Ce0.75Zr0.25)O 3 particles also exhibited excellent Jc-B properties.
| Original language | English |
|---|---|
| Article number | 093 |
| Pages (from-to) | 373-376 |
| Number of pages | 4 |
| Journal | Journal of Physics: Conference Series |
| Volume | 43 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2006 Jun 1 |
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- Physics and Astronomy(all)
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Microstructure and superconducting properties of meltprocessed RE-Ba-Cu-O with dispersed barium cerate particles. / Nariki, S.; Sakai, Naomichi; Murakami, Masato; Hirabayashi, I.
In: Journal of Physics: Conference Series, Vol. 43, No. 1, 093, 01.06.2006, p. 373-376.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microstructure and superconducting properties of meltprocessed RE-Ba-Cu-O with dispersed barium cerate particles
AU - Nariki, S.
AU - Sakai, Naomichi
AU - Murakami, Masato
AU - Hirabayashi, I.
PY - 2006/6/1
Y1 - 2006/6/1
N2 - We studied microstructure and superconducting properties of melt-processed RE123 (REY and Dy) bulk superconductors with a large amount of BaCeO3 addition. The melttextured bulk samples with compositions of Y123 + xBaCeO 3 (x0.05-0.4) and 0.5 wt% of Pt were fabricated in air. The BaCeO3 particles with the diameter of 1-2 νm were trapped in the melt-textured samples. The critical current density (Jc) in a low field region increased with the amount of BaCeO3 inclusions. This suggests the BaCeO3 particles act as effective flux pinning centers, as well as Y211 particles in conventional melt-textured Y-Ba-Cu-O bulk materials. We found that the size of BaCeO3 particles could be reduced by substituting Zr on Ce site. The Y123 bulk sample with 30 mol% of Ba(Ce0.75Zr0.25)O3 and 0.5 wt% Pt showed a high Jc value of 110 kA/cm2 at 77 K. The Dy123 bulk samples dispersed BaCeO3 and Ba(Ce0.75Zr0.25)O 3 particles also exhibited excellent Jc-B properties.
AB - We studied microstructure and superconducting properties of melt-processed RE123 (REY and Dy) bulk superconductors with a large amount of BaCeO3 addition. The melttextured bulk samples with compositions of Y123 + xBaCeO 3 (x0.05-0.4) and 0.5 wt% of Pt were fabricated in air. The BaCeO3 particles with the diameter of 1-2 νm were trapped in the melt-textured samples. The critical current density (Jc) in a low field region increased with the amount of BaCeO3 inclusions. This suggests the BaCeO3 particles act as effective flux pinning centers, as well as Y211 particles in conventional melt-textured Y-Ba-Cu-O bulk materials. We found that the size of BaCeO3 particles could be reduced by substituting Zr on Ce site. The Y123 bulk sample with 30 mol% of Ba(Ce0.75Zr0.25)O3 and 0.5 wt% Pt showed a high Jc value of 110 kA/cm2 at 77 K. The Dy123 bulk samples dispersed BaCeO3 and Ba(Ce0.75Zr0.25)O 3 particles also exhibited excellent Jc-B properties.
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U2 - 10.1088/1742-6596/43/1/093
DO - 10.1088/1742-6596/43/1/093
M3 - Article
VL - 43
SP - 373
EP - 376
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 093
ER -