Superconductivity in (Pb/Cu)-"1222" copper oxides

Naomichi Sakai, Toshihiko Maeda, H. Yamauchi, Shoji Tanaka

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The superconductivity in (Pb/Cu)-"1222" cuprates, (Pb, Cu) (Sr, Ln)2(Ln, Ce)2Cu2Oz (Ln=Sm, Eu, Gd, Dy and Ho), has been found to be strongly dependent on the oxygen content as well as on the species of Ln ion. While the samples with Ln=Sm, Eu, Gd and Dy prepared in O2 at an ambient pressure exhibit superconductivity, those with Ln=Ho required post-annealing in O2 of a high pressure to become superconductors. It was likely that the ionic radius of Ln3+ and oxygen stoichiometry were strongly related to each other and both played important roles in the occurrence of superconductivity in the (Pb/Cu)-"1222" compounds.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume212
Issue number1-2
DOIs
Publication statusPublished - 1993 Jul 1
Externally publishedYes

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Copper oxides
copper oxides
Superconductivity
superconductivity
Oxygen
oxygen
Stoichiometry
cuprates
Superconducting materials
stoichiometry
occurrences
Annealing
Ions
annealing
radii
ions

ASJC Scopus subject areas

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

Cite this

Superconductivity in (Pb/Cu)-"1222" copper oxides. / Sakai, Naomichi; Maeda, Toshihiko; Yamauchi, H.; Tanaka, Shoji.

In: Physica C: Superconductivity and its applications, Vol. 212, No. 1-2, 01.07.1993, p. 75-80.

Research output: Contribution to journalArticle

Sakai, Naomichi ; Maeda, Toshihiko ; Yamauchi, H. ; Tanaka, Shoji. / Superconductivity in (Pb/Cu)-"1222" copper oxides. In: Physica C: Superconductivity and its applications. 1993 ; Vol. 212, No. 1-2. pp. 75-80.
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