Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 51-56 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 213 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Aug 1 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Superconductivities in the (Bi,Pb)-oxycarbonate system. / Uehara, M.; Nakata, H.; Akimitsu, Jun; Den, T.; Kobayashi, T.; Matsui, Y.
In: Physica C: Superconductivity and its Applications, Vol. 213, No. 1-2, 01.08.1993, p. 51-56.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superconductivities in the (Bi,Pb)-oxycarbonate system
AU - Uehara, M.
AU - Nakata, H.
AU - Akimitsu, Jun
AU - Den, T.
AU - Kobayashi, T.
AU - Matsui, Y.
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.
UR - http://www.scopus.com/inward/record.url?scp=0027642413&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027642413&partnerID=8YFLogxK
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 -