Abstract
New Pb-based layered cuprates containing boron with the 1232 structure have been synthesized in the (Pb0.5B0.5)Sr2(Er3−x−y Ce x Sr y )Cu2O z system. Nearly the single 1232 phase samples are obtained for the nominal composition of 1.6≤x≤1.9 and y=0.2. A sample with the composition of (Pb0.5B0.5)Sr2(Er1.2Ce1.6Sr0.2)Cu2O z shows resistivity-dropping phenomenon below 10 K and it shows a diamagnetic signal at about 9.0 K, though the superconducting volume fraction is very small. From these results, the sample may well be a new Pb-based superconductor with the 1232 structure.
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Sasakura, H., Akagi, Y., Tanaka, M. et al. Synthesis of New Pb-Based 1232 Cuprate Containing Boron in the (Pb0.5B0.5) Sr2(Er3−x−y Ce x Sr y )Cu2O z System. J Supercond Nov Magn 23, 1381–1384 (2010). https://doi.org/10.1007/s10948-010-0787-8
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DOI: https://doi.org/10.1007/s10948-010-0787-8