New superconducting lead cuprate with 1201 structure, (Pb0.5B0.5) (SrLa)CuOz

New Pb-based superconducting cuprate with the 1201 structure has been synthesized in the (Pb1 - yBy)(Sr2 - xLax)CuOz system. From X-ray powder diffraction study, the almost-single 1201 phase sample is found to be obtained at x = 1.0 and y = 0.5 for the nominal composition of (Pb1 - yBy)(Sr2 - xLax)C...

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Bibliographic Details
Published in:Materials letters 2008-11, Vol.62 (28), p.4400-4402
Main Authors: Sasakura, Hiroyuki, Akagi, Yoshiya, Tsukui, Shigeki, Adachi, Motoaki
Format: Article
Language:English
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Summary:New Pb-based superconducting cuprate with the 1201 structure has been synthesized in the (Pb1 - yBy)(Sr2 - xLax)CuOz system. From X-ray powder diffraction study, the almost-single 1201 phase sample is found to be obtained at x = 1.0 and y = 0.5 for the nominal composition of (Pb1 - yBy)(Sr2 - xLax)CuOz. The crystal structure has a tetragonal symmetry with the lattice parameters of a = 0.3779 nm and c = 0.8654 nm. The sample shows an onset of superconductivity at about 32 K as measured by the temperature dependence of the DC magnetic susceptibility.
ISSN:0167-577X
DOI:10.1016/j.matlet.2008.07.041