RE-Ba2Cu3Oy formation mechanism via (RE)2BaO4

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We studied the mechanism of (RE)Ba2Cu3Oy phase formation via (RE)2BaO4 in the case of GdBa2Cu3Oy + 40 mol% Gd-211 combination, using mixture of Gd2BaO4, BaCuO2 and CuO. Pellets of this composite were sintered at various temperatures between 700 °C and 1100 °C and held for 1 h in Ar (100%), Ar-1% O2, Ar-0.1% O2 atmospheres, then rapidly quenched in oil. The samples were characterized by XRD, SEM, and EPMA analyses. XRD and EPMA analyses indicated that Gd-123 phase forms at around 900 °C but the temperature depends on the chosen atmosphere. The samples quenched from high temperatures (>1000 °C) showed that final formation of a secondary phase depends on the temperature held before the quench.

Original languageEnglish
Pages (from-to)282-285
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume445-448
Issue number1-2
DOIs
Publication statusPublished - 2006 Oct 1

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Electron probe microanalysis
atmospheres
pellets
Temperature
temperature
oils
Oils
scanning electron microscopy
composite materials
Scanning electron microscopy
Composite materials

Keywords

  • Electron probe micro analysis
  • GdBaO
  • Microstructure
  • Quench experiments
  • XRD

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

RE-Ba2Cu3Oy formation mechanism via (RE)2BaO4. / Miryala, Muralidhar; Sakai, Naomichi; Murakami, Masato; Hirabayashi, I.; Tanaka, S.

In: Physica C: Superconductivity and its Applications, Vol. 445-448, No. 1-2, 01.10.2006, p. 282-285.

Research output: Contribution to journalArticle

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abstract = "We studied the mechanism of (RE)Ba2Cu3Oy phase formation via (RE)2BaO4 in the case of GdBa2Cu3Oy + 40 mol{\%} Gd-211 combination, using mixture of Gd2BaO4, BaCuO2 and CuO. Pellets of this composite were sintered at various temperatures between 700 °C and 1100 °C and held for 1 h in Ar (100{\%}), Ar-1{\%} O2, Ar-0.1{\%} O2 atmospheres, then rapidly quenched in oil. The samples were characterized by XRD, SEM, and EPMA analyses. XRD and EPMA analyses indicated that Gd-123 phase forms at around 900 °C but the temperature depends on the chosen atmosphere. The samples quenched from high temperatures (>1000 °C) showed that final formation of a secondary phase depends on the temperature held before the quench.",
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AU - Sakai, Naomichi

AU - Murakami, Masato

AU - Hirabayashi, I.

AU - Tanaka, S.

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N2 - We studied the mechanism of (RE)Ba2Cu3Oy phase formation via (RE)2BaO4 in the case of GdBa2Cu3Oy + 40 mol% Gd-211 combination, using mixture of Gd2BaO4, BaCuO2 and CuO. Pellets of this composite were sintered at various temperatures between 700 °C and 1100 °C and held for 1 h in Ar (100%), Ar-1% O2, Ar-0.1% O2 atmospheres, then rapidly quenched in oil. The samples were characterized by XRD, SEM, and EPMA analyses. XRD and EPMA analyses indicated that Gd-123 phase forms at around 900 °C but the temperature depends on the chosen atmosphere. The samples quenched from high temperatures (>1000 °C) showed that final formation of a secondary phase depends on the temperature held before the quench.

AB - We studied the mechanism of (RE)Ba2Cu3Oy phase formation via (RE)2BaO4 in the case of GdBa2Cu3Oy + 40 mol% Gd-211 combination, using mixture of Gd2BaO4, BaCuO2 and CuO. Pellets of this composite were sintered at various temperatures between 700 °C and 1100 °C and held for 1 h in Ar (100%), Ar-1% O2, Ar-0.1% O2 atmospheres, then rapidly quenched in oil. The samples were characterized by XRD, SEM, and EPMA analyses. XRD and EPMA analyses indicated that Gd-123 phase forms at around 900 °C but the temperature depends on the chosen atmosphere. The samples quenched from high temperatures (>1000 °C) showed that final formation of a secondary phase depends on the temperature held before the quench.

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