EFFECTS OF SB-INCORPORATION ON THE 2223 PHASE IN THE SUPERCONDUCTING BI-PB-SR-CA-CU-O SYSTEM

被引：0
作者：
KIM, SH
LEE, DH
PARK, JS
CHO, SK
LEE, SH
KIM, KH
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来源：
BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 1994年 / 15卷 / 02期
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Samples of (Bi2-xSbx)PbSr2Ca2Cu3Oy compositions with x=0.0, 0.1, and 0.2 were prepared by solid-state reaction. The solubility of Sb into the 2223 phase is lower than 0.05 for the ratio of Sb/Bi. The lack of stability of the Sb-substituted Bi2O2 double layers is likely to cause the solubility low. There is no great dependence of lattice parameters on the Sb-content, and bonds around the square-pyramidal Cu atom are not affected by the Sb3+ ion substituted. The superconducting transition temperature of this system is decreased gradually with increase of Sb, which is tentatively attributable to the perturbation of the Bi 6p-0 2p band and/or to the low volume fraction of the 2223 phase.
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页码：115 / 118
页数：4
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