Single-grain growth, microstructure and superconducting properties of (Sm,Eu)123 superconductors with BaCuO2-x addition

A. Hu, Naomichi Sakai, H. Zhou, M. Matsui, Masato Murakami

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

High quality (Sm0.5, Eu0.5)Ba2Cu3O7-δ single domains were grown in air with BaCuO2-x addition. It was found that a RE-Ba substitution (RE: Sm and Eu) could be effectively suppressed by a small addition of BaCuO2-x. The 94 K superconductivity with sharp transition was obtained in the composition range of 0.16 ∼ 0.33 BaCuO2-x and (Sm0.5, Eu0.5)Ba2Cu3O7-δ in a molar ratio. At 77 K, a surface field of 0.8 T was trapped in a single-domain pellet of 3.2 cm diameter. A further addition of BaCuO2-x deteriorated the microstructure and degraded the superconducting performance.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalSuperconductor Science and Technology
Volume16
Issue number1
DOIs
Publication statusPublished - 2003 Jan
Externally publishedYes

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Superconductivity
Grain growth
Superconducting materials
Substitution reactions
microstructure
Microstructure
Air
Chemical analysis
pellets
superconductivity
substitutes
air

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

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abstract = "High quality (Sm0.5, Eu0.5)Ba2Cu3O7-δ single domains were grown in air with BaCuO2-x addition. It was found that a RE-Ba substitution (RE: Sm and Eu) could be effectively suppressed by a small addition of BaCuO2-x. The 94 K superconductivity with sharp transition was obtained in the composition range of 0.16 ∼ 0.33 BaCuO2-x and (Sm0.5, Eu0.5)Ba2Cu3O7-δ in a molar ratio. At 77 K, a surface field of 0.8 T was trapped in a single-domain pellet of 3.2 cm diameter. A further addition of BaCuO2-x deteriorated the microstructure and degraded the superconducting performance.",
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T1 - Single-grain growth, microstructure and superconducting properties of (Sm,Eu)123 superconductors with BaCuO2-x addition

AU - Hu, A.

AU - Sakai, Naomichi

AU - Zhou, H.

AU - Matsui, M.

AU - Murakami, Masato

PY - 2003/1

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AB - High quality (Sm0.5, Eu0.5)Ba2Cu3O7-δ single domains were grown in air with BaCuO2-x addition. It was found that a RE-Ba substitution (RE: Sm and Eu) could be effectively suppressed by a small addition of BaCuO2-x. The 94 K superconductivity with sharp transition was obtained in the composition range of 0.16 ∼ 0.33 BaCuO2-x and (Sm0.5, Eu0.5)Ba2Cu3O7-δ in a molar ratio. At 77 K, a surface field of 0.8 T was trapped in a single-domain pellet of 3.2 cm diameter. A further addition of BaCuO2-x deteriorated the microstructure and degraded the superconducting performance.

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