New Pb-based 1212 Superconductor Containing Phosphorus, (Pb0.75P0.25)Sr-2(Y1-xCax)Cu2Oz

作者：Sasakura Hiroyuki^*; Akagi Yoshiya; Tanaka Masashi; Tsukui Shigeki; Adachi Motoaki

来源：Journal of Superconductivity and Novel Magnetism, 2010, 23(8): 1529-1532.

DOI：10.1007/s10948-010-0809-6

• Phosphorus containing
• Pb-based 1212 cuprate
• (Pb1-yPy)Sr-2(Y1-xCax)Cu2Oz system
• New superconductor

New Pb-based 1212 compounds containing phosphorus have been discovered in the (Pb1-y P (y) )Sr-2(Y1-x Ca (x) )Cu2O (z) system; almost the single 1212 phase samples can be obtained for the composition range of 0.0a parts per thousand currency signxa parts per thousand currency sign0.6 and y=0.25. The crystal structure for each sample has a tetragonal symmetry with the typical lattice parameters a=0.3828 nm and c=1.182 nm. Among them, the sample with x=0.6 and y=0.25 shows the onset of resistivity drop at about 39 K and zero-resistivity at about 17 K. Moreover, the sample shows a diamagnetic signal at about 38 K. These phenomena are found to originate from superconductivity with the bulk feature.

• 出版日期2010-12