caa a22 4500 445382899 CHVBK 20180317143022.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10948-010-0855-0 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0855-0 New Pb-based 1212 Cuprate Superconductors Containing Sulfur, (Pb0.75S0.25)Sr2 (Y1− x Ca x )Cu2O z [Elektronische Daten] [Masashi Tanaka, Hiroyuki Sasakura, Yoshiya Akagi, Shigeki Tsukui, Motoaki Adachi] New Pb-based 1212 layered cuprates containing sulfur have been synthesized in the (Pb0.75S0.25) Sr2 (Y1−x Ca x ) Cu2O z system. X-ray diffraction analysis shows that the almost single-phase samples are obtained within a region of 0.0≤x≤0.5. The crystal structure of each sample has a tetragonal symmetry with the typical lattice constants a=0.3837nm and c=1.186nm. As Ca content x is increasing, the semiconductor-like behavior is suppressed. But after only annealing under ambient O2 pressure, none of the samples show any trace of superconductivity. On the other hand, when the samples are annealed under high O2 pressure of about 13.6 MPa, they show resistivity dropping phenomenon in a region of 0.5≤x≤0.7. Among them, the lowest resistivity sample with x=0.6 has an onset temperature of the resistivity dropping at about 22.5K. Moreover, this sample shows a diamagnetic signal at about 21.5K. These phenomena are attributed to superconductivity. Springer Science+Business Media, LLC, 2010 New Pb-based cuprate nationallicence 1212 phase nationallicence Oxy-anion substitution nationallicence (Pb0.75S0.25) Sr2 (Y1− x Ca x ) Cu2O z system nationallicence Superconductivity nationallicence Tanaka Masashi Department of Physics, Shizuoka University, 836 Ohya, Suruga-ku, 422-8529, Shizuoka, Japan aut Sasakura Hiroyuki Department of Physics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Shizuoka, Japan aut Akagi Yoshiya Department of Physics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Shizuoka, Japan aut Tsukui Shigeki Department of Chemical Engineering, Graduate School of Engineering, Osaka Prefecture University, Sakai-shi, 599-8531, Osaka, Japan aut Adachi Motoaki Department of Chemical Engineering, Graduate School of Engineering, Osaka Prefecture University, Sakai-shi, 599-8531, Osaka, Japan aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1479-1483 1557-1939 24:5<1479 2011 24 10948 https://doi.org/10.1007/s10948-010-0855-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0855-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tanaka Masashi Department of Physics, Shizuoka University, 836 Ohya, Suruga-ku, 422-8529, Shizuoka, Japan aut NATIONALLICENCE 700 1- Sasakura Hiroyuki Department of Physics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Shizuoka, Japan aut NATIONALLICENCE 700 1- Akagi Yoshiya Department of Physics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Shizuoka, Japan aut NATIONALLICENCE 700 1- Tsukui Shigeki Department of Chemical Engineering, Graduate School of Engineering, Osaka Prefecture University, Sakai-shi, 599-8531, Osaka, Japan aut NATIONALLICENCE 700 1- Adachi Motoaki Department of Chemical Engineering, Graduate School of Engineering, Osaka Prefecture University, Sakai-shi, 599-8531, Osaka, Japan aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1479-1483 1557-1939 24:5<1479 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer