Effect of BaO2 addition on superconducting properties of melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ superconductors

A. Hu; H. Zhou; S. Nariki; N. Sakai; M. Murakami; I. Hirabayashi

doi:10.1088/0953-2048/17/3/040

Effect of BaO₂ addition on superconducting properties of melt-processed (Sm, Eu, Gd)Ba₂Cu₃O_7-δ superconductors

A. Hu, H. Zhou, S. Nariki, N. Sakai, M. Murakami, I. Hirabayashi

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We fabricated large c-axis-oriented single-grain (Sm, Eu, Gd)Ba₂Cu₃O_7-δ bulk superconductors with BaO₂ addition under 1% O₂ partial pressure in Ar. The experiment showed that BaO₂ addition significantly reduced RE-Ba substitution, slightly hindered the coarsening of (Sm, Eu, Gd)₂BaCuO₅ inclusion, and improved the superconducting properties. An optimum addition amount was around 0.1-0.18 mol^-1 RE123. At 77 K, the critical current density reached 83 000 A cm^-2 in zero field. A disc 3.5 cm in diameter trapped a field of 1.27 T at 77 K.

Original language	English
Pages (from-to)	545-548
Number of pages	4
Journal	Superconductor Science and Technology
Volume	17
Issue number	3
DOIs	https://doi.org/10.1088/0953-2048/17/3/040
Publication status	Published - 2004 Mar 1

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/17/3/040

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abstract = "We fabricated large c-axis-oriented single-grain (Sm, Eu, Gd)Ba2Cu3O7-δ bulk superconductors with BaO2 addition under 1% O2 partial pressure in Ar. The experiment showed that BaO2 addition significantly reduced RE-Ba substitution, slightly hindered the coarsening of (Sm, Eu, Gd)2BaCuO5 inclusion, and improved the superconducting properties. An optimum addition amount was around 0.1-0.18 mol-1 RE123. At 77 K, the critical current density reached 83 000 A cm-2 in zero field. A disc 3.5 cm in diameter trapped a field of 1.27 T at 77 K.",

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AU - Hu, A.

AU - Zhou, H.

AU - Nariki, S.

AU - Sakai, N.

AU - Murakami, M.

AU - Hirabayashi, I.

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N2 - We fabricated large c-axis-oriented single-grain (Sm, Eu, Gd)Ba2Cu3O7-δ bulk superconductors with BaO2 addition under 1% O2 partial pressure in Ar. The experiment showed that BaO2 addition significantly reduced RE-Ba substitution, slightly hindered the coarsening of (Sm, Eu, Gd)2BaCuO5 inclusion, and improved the superconducting properties. An optimum addition amount was around 0.1-0.18 mol-1 RE123. At 77 K, the critical current density reached 83 000 A cm-2 in zero field. A disc 3.5 cm in diameter trapped a field of 1.27 T at 77 K.

AB - We fabricated large c-axis-oriented single-grain (Sm, Eu, Gd)Ba2Cu3O7-δ bulk superconductors with BaO2 addition under 1% O2 partial pressure in Ar. The experiment showed that BaO2 addition significantly reduced RE-Ba substitution, slightly hindered the coarsening of (Sm, Eu, Gd)2BaCuO5 inclusion, and improved the superconducting properties. An optimum addition amount was around 0.1-0.18 mol-1 RE123. At 77 K, the critical current density reached 83 000 A cm-2 in zero field. A disc 3.5 cm in diameter trapped a field of 1.27 T at 77 K.

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Effect of BaO₂ addition on superconducting properties of melt-processed (Sm, Eu, Gd)Ba₂Cu₃O_7-δ superconductors

Abstract

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