Pseudo-binary phase diagram along NdBa2Cu3Oy-Ba3Cu5Oz under pO2 of 0.01 atm

K. Iida, G. Osabe, S. I. Yoo, T. Takizawa, Naomichi Sakai, Masato Murakami

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report the NdBa2Cu3Oy (Nd123)-Ba3Cu5Oz(035) pseudo-binary section in the Nd2O3-BaO-CuO system under the oxygen partial pressure pO2 = 0.01 atm. We performed thermogravitational and differential thermal analysis (TG-DTA) and powder x-ray diffraction (XRD) measurements for quenched samples. We also performed high-temperature XRD for the determination of equilibrium solid phases at elevated temperatures. In situ observation of the primary solid phases with laser scanning microscopy was also performed for an accurate determination of the liquidus line. In comparison with the Nd123-035 pseudo-binary phase diagram in air, the liquidus line under pO2 = 0.01 atm shifts to a lower temperature.

Original languageEnglish
Pages (from-to)1322-1326
Number of pages5
JournalSuperconductor Science and Technology
Volume13
Issue number9
DOIs
Publication statusPublished - 2000 Sep
Externally publishedYes

Fingerprint

Phase diagrams
liquidus
phase diagrams
solid phases
x ray diffraction
Diffraction
X rays
Partial pressure
Powders
Temperature
Differential thermal analysis
partial pressure
Microscopic examination
thermal analysis
Oxygen
microscopy
Scanning
scanning
Lasers
shift

ASJC Scopus subject areas

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

Cite this

Pseudo-binary phase diagram along NdBa2Cu3Oy-Ba3Cu5Oz under pO2 of 0.01 atm. / Iida, K.; Osabe, G.; Yoo, S. I.; Takizawa, T.; Sakai, Naomichi; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 13, No. 9, 09.2000, p. 1322-1326.

Research output: Contribution to journalArticle

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AU - Murakami, Masato

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AB - We report the NdBa2Cu3Oy (Nd123)-Ba3Cu5Oz(035) pseudo-binary section in the Nd2O3-BaO-CuO system under the oxygen partial pressure pO2 = 0.01 atm. We performed thermogravitational and differential thermal analysis (TG-DTA) and powder x-ray diffraction (XRD) measurements for quenched samples. We also performed high-temperature XRD for the determination of equilibrium solid phases at elevated temperatures. In situ observation of the primary solid phases with laser scanning microscopy was also performed for an accurate determination of the liquidus line. In comparison with the Nd123-035 pseudo-binary phase diagram in air, the liquidus line under pO2 = 0.01 atm shifts to a lower temperature.

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