Stability of barium oxides in REBa 2 Cu 3 O y superconductors

R. Kita, S. Kato, T. Nakamura, O. Miura, Ryo Teranishi, S. Yasunaga, H. Kai, Masashi Mukaida, A. Ichinose, K. Matsumoto, M. S. Horii, Y. Yoshida

Research output: Contribution to journalArticle

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Abstract

We have investigated the stability of BaSnO 3 , BaZrO 3 , BaTiO 3 and BaNb 2 O 6 in the ErBa 2 Cu 3 O y (Er123) matrix by mixing and sintering powders of Er123 and barium oxides. The degradation of T c due to the addition of barium oxide was the lowest in the case of BaSnO 3 (BSO). BSO-added samples exhibited a T c above 90 K even for 15 vol% addition and an improved J c under a magnetic field. XRD and SEM results indicated that BSO was very stable in the Er123 matrix. The dependence of T c on BSO addition showed similar trends for the sintered samples and Er123 thin films. It was found that the most stable barium oxide in Er123 superconductors was BaSnO 3 .

Original languageEnglish
Pages (from-to)1391-1394
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume468
Issue number15-20
DOIs
Publication statusPublished - Sep 15 2008

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barium oxides
Barium
Superconducting materials
Oxides
matrices
Powders
sintering
Sintering
Magnetic fields
degradation
trends
Degradation
Thin films
Scanning electron microscopy
scanning electron microscopy
oxides
thin films
magnetic fields
barium oxide

All Science Journal Classification (ASJC) codes

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

Cite this

Stability of barium oxides in REBa 2 Cu 3 O y superconductors . / Kita, R.; Kato, S.; Nakamura, T.; Miura, O.; Teranishi, Ryo; Yasunaga, S.; Kai, H.; Mukaida, Masashi; Ichinose, A.; Matsumoto, K.; Horii, M. S.; Yoshida, Y.

In: Physica C: Superconductivity and its applications, Vol. 468, No. 15-20, 15.09.2008, p. 1391-1394.

Research output: Contribution to journalArticle

Kita, R, Kato, S, Nakamura, T, Miura, O, Teranishi, R, Yasunaga, S, Kai, H, Mukaida, M, Ichinose, A, Matsumoto, K, Horii, MS & Yoshida, Y 2008, ' Stability of barium oxides in REBa 2 Cu 3 O y superconductors ', Physica C: Superconductivity and its applications, vol. 468, no. 15-20, pp. 1391-1394. https://doi.org/10.1016/j.physc.2008.05.121
Kita, R. ; Kato, S. ; Nakamura, T. ; Miura, O. ; Teranishi, Ryo ; Yasunaga, S. ; Kai, H. ; Mukaida, Masashi ; Ichinose, A. ; Matsumoto, K. ; Horii, M. S. ; Yoshida, Y. / Stability of barium oxides in REBa 2 Cu 3 O y superconductors In: Physica C: Superconductivity and its applications. 2008 ; Vol. 468, No. 15-20. pp. 1391-1394.
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AU - Teranishi, Ryo

AU - Yasunaga, S.

AU - Kai, H.

AU - Mukaida, Masashi

AU - Ichinose, A.

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AU - Horii, M. S.

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AB - We have investigated the stability of BaSnO 3 , BaZrO 3 , BaTiO 3 and BaNb 2 O 6 in the ErBa 2 Cu 3 O y (Er123) matrix by mixing and sintering powders of Er123 and barium oxides. The degradation of T c due to the addition of barium oxide was the lowest in the case of BaSnO 3 (BSO). BSO-added samples exhibited a T c above 90 K even for 15 vol% addition and an improved J c under a magnetic field. XRD and SEM results indicated that BSO was very stable in the Er123 matrix. The dependence of T c on BSO addition showed similar trends for the sintered samples and Er123 thin films. It was found that the most stable barium oxide in Er123 superconductors was BaSnO 3 .

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