Spatial variation of superconducting properties and compositional fluctuation in large melt-processed (Sm-Eu)123 single domains

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3 Citations (Scopus)

Abstract

Large size (Sm0.5Eu0.5)Ba2Cu 3O7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low Tc and Jc values at the initial crystallization in the top center of single domain while exhibiting high Tc and J c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.

Original languageEnglish
Pages (from-to)571-574
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Fingerprint

Crystallization
Grain growth
Substitution reactions
Modulation
inoculation
Cooling
Air
Chemical analysis
trapping
substitutes
crystallization
cooling
modulation
Experiments
air

Keywords

  • (SmEu)BaCuO
  • Compositional fluctuation
  • Melt processing

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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abstract = "Large size (Sm0.5Eu0.5)Ba2Cu 3O7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low Tc and Jc values at the initial crystallization in the top center of single domain while exhibiting high Tc and J c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.",
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AU - Hu, A.

AU - Sakai, Naomichi

AU - Murakami, Masato

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AB - Large size (Sm0.5Eu0.5)Ba2Cu 3O7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low Tc and Jc values at the initial crystallization in the top center of single domain while exhibiting high Tc and J c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.

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