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

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

doi:10.1016/0921-4534(93)90487-B

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

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

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

The superconductivity in (Pb/Cu)-"1222" cuprates, (Pb, Cu) (Sr, Ln)₂(Ln, Ce)₂Cu₂O_z (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 language	English
Pages (from-to)	75-80
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	212
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(93)90487-B
Publication status	Published - 1993 Jul 1

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ASJC Scopus subject areas

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

Cite this

Sakai, N., Maeda, T., Yamauchi, H., & Tanaka, S. (1993). Superconductivity in (Pb/Cu)-"1222" copper oxides. Physica C: Superconductivity and its applications, 212(1-2), 75-80. https://doi.org/10.1016/0921-4534(93)90487-B

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10.1016/0921-4534(93)90487-B