RE-Ba2Cu3Oy formation mechanism via (RE)2BaO4

M. Muralidhar; N. Sakai; M. Murakami; I. Hirabayashi; S. Tanaka

doi:10.1016/j.physc.2006.06.035

RE-Ba₂Cu₃O_y formation mechanism via (RE)₂BaO₄

M. Muralidhar, N. Sakai, M. Murakami, I. Hirabayashi, S. Tanaka

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

5 Citations (Scopus)

Abstract

We studied the mechanism of (RE)Ba₂Cu₃O_y phase formation via (RE)₂BaO₄ in the case of GdBa₂Cu₃O_y + 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 language	English
Pages (from-to)	282-285
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	445-448
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2006.06.035
Publication status	Published - 2006 Oct 1

Keywords

Electron probe micro analysis
GdBaO
Microstructure
Quench experiments
XRD

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "RE-Ba2Cu3Oy formation mechanism via (RE)2BaO4",

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.",

keywords = "Electron probe micro analysis, GdBaO, Microstructure, Quench experiments, XRD",

author = "M. Muralidhar and N. Sakai and M. Murakami and I. Hirabayashi and S. Tanaka",

year = "2006",

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doi = "10.1016/j.physc.2006.06.035",

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T1 - RE-Ba2Cu3Oy formation mechanism via (RE)2BaO4

AU - Muralidhar, M.

AU - Sakai, N.

AU - Murakami, M.

AU - Hirabayashi, I.

AU - Tanaka, S.

PY - 2006/10/1

Y1 - 2006/10/1

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.

KW - Electron probe micro analysis

KW - GdBaO

KW - Microstructure

KW - Quench experiments

KW - XRD

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JO - Physica C: Superconductivity and its Applications

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