Synthesis of new members of Pb-based 1222 superconductors containing sulfur: (Pb^sub 0.75^S^sub 0.25^)Sr^sub 2^(RE^sub 1.6^Ce^sub 0.4^)Cu^sub 2^O^sub z^ (RE = Sm, Gd, Dy, and Ho)

We have discovered new members of the Pb-based 1222 layered cuprates containing sulfur of (Pb^sub 0.75^S^sub 0.25^)Sr^sub 2^(RE^sub 1.6^Ce^sub 0.4^)Cu^sub 2^O^sub z^ with RE = Sm, Gd, Dy, and Ho. All the samples are of almost-single 1222 phase. From the ρ-T and χ-T measurements, they are found to be...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2014-05, Vol.25 (5), p.2183
Main Authors: Sasakura, Hiroyuki, Akagi, Yoshiya, Tanaka, Masashi, Tsukui, Shigeki, Adachi, Motoaki
Format: Article
Language:English
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Summary:We have discovered new members of the Pb-based 1222 layered cuprates containing sulfur of (Pb^sub 0.75^S^sub 0.25^)Sr^sub 2^(RE^sub 1.6^Ce^sub 0.4^)Cu^sub 2^O^sub z^ with RE = Sm, Gd, Dy, and Ho. All the samples are of almost-single 1222 phase. From the ρ-T and χ-T measurements, they are found to be superconductors after annealing under 125 atm O2 atmosphere at 400 °C. Among them, the sample with RE = Gd is found to show superconductivity at the highest temperature of 30 K.[PUBLICATION ABSTRACT]
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-014-1857-7