Melt-processed light rare earth element-Ba-Cu-O

Masato Murakami, Naomichi Sakai, T. Higuchi, S. I. Yoo

Research output: Contribution to journalArticle

525 Citations (Scopus)

Abstract

Unlike Y123 which forms only a stoichiometric compound, the light rare earth elements (LREs: La, Nd, Sm, Eu, Gd) form a solid solution LRE1+xBa2-xCu3Oy. The presence of such solid solution caused a depression in the superconducting transition temperatures (Tc), particularly for La123, Nd123 and Sm123 when they are melt processed in air. Recently, we have found that the Tc of these LRE123 superconductors can greatly be enhanced when they are melt processed in a reduced oxygen atmosphere. Furthermore, Jc values of these superconductors were larger than that of a good quality Y123 superconductor in high magnetic fields at 77 K. In this article, on the basis of our study over the last several years, the melt processes for LRE-Ba-Cu-O are described, the microstructural and superconducting properties of the superconductors are reviewed and the flux pinning mechanism is also discussed.

Original languageEnglish
Pages (from-to)1015-1032
Number of pages18
JournalSuperconductor Science and Technology
Volume9
Issue number12
DOIs
Publication statusPublished - 1996 Dec
Externally publishedYes

Fingerprint

Rare earth elements
Superconducting materials
rare earth elements
Solid solutions
solid solutions
Flux pinning
flux pinning
Superconducting transition temperature
transition temperature
Magnetic fields
Oxygen
atmospheres
air
oxygen
Air
magnetic fields

ASJC Scopus subject areas

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

Cite this

Melt-processed light rare earth element-Ba-Cu-O. / Murakami, Masato; Sakai, Naomichi; Higuchi, T.; Yoo, S. I.

In: Superconductor Science and Technology, Vol. 9, No. 12, 12.1996, p. 1015-1032.

Research output: Contribution to journalArticle

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