TY - JOUR
T1 - Superconductivities in the (Bi,Pb)-oxycarbonate system
AU - Uehara, M.
AU - Nakata, H.
AU - Akimitsu, J.
AU - Den, T.
AU - Kobayashi, T.
AU - Matsui, Y.
N1 - Funding Information:
ported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan, and by a Research Institute of Aoyama-Gakuin University.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1993/8/1
Y1 - 1993/8/1
N2 - Two (Bi,Pb)-oxycarbonate superconductors have been found by resistivity and magnetization measurements. Transition temperatures are 41 K (54K) for the low-Tc phase (high-Tc phase). The crystal structures were analyzed by using the HRTEM and X-ray diffraction techniques. The lattice parameters were a0=3.821 A ̊, c0=39.444 A ̊ (a0=3.88 A ̊, c0=54.52 A ̊) for low-Tc phase (high-Tc phase) in the tetragonal unit cell. A crystal structure model is proposed in which the chemical formula for the low-Tc phase (high-Tc phase) is (Bi,Pb)2Sr4Cu2 CO3O8 ((Bi,Pb)2Sr6Cu3(CO3)2O10), which can be described as the combination of a single (double) Sr2CO3 block and a single (Bi,Pb)2Sr2O4 block.
AB - Two (Bi,Pb)-oxycarbonate superconductors have been found by resistivity and magnetization measurements. Transition temperatures are 41 K (54K) for the low-Tc phase (high-Tc phase). The crystal structures were analyzed by using the HRTEM and X-ray diffraction techniques. The lattice parameters were a0=3.821 A ̊, c0=39.444 A ̊ (a0=3.88 A ̊, c0=54.52 A ̊) for low-Tc phase (high-Tc phase) in the tetragonal unit cell. A crystal structure model is proposed in which the chemical formula for the low-Tc phase (high-Tc phase) is (Bi,Pb)2Sr4Cu2 CO3O8 ((Bi,Pb)2Sr6Cu3(CO3)2O10), which can be described as the combination of a single (double) Sr2CO3 block and a single (Bi,Pb)2Sr2O4 block.
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U2 - 10.1016/0921-4534(93)90757-H
DO - 10.1016/0921-4534(93)90757-H
M3 - Article
AN - SCOPUS:0027642413
VL - 213
SP - 51
EP - 56
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -