MODULATION-FREE BISMUTH-LEAD CUPRATE SUPERCONDUCTORS - BIPBSR1+XL1-XCUO6 AND BIPBSR2Y1-XCAXCU2O8

被引：32

作者：

MANIVANNAN, V ^{[1
]}

GOPALAKRISHNAN, J ^{[1
]}

RAO, CNR ^{[1
]}

机构：

[1] INDIAN INST SCI, SOLID STATE & STRUCT CHEM UNIT, BANGALORE 560012, KARNATAKA, INDIA

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.43.8686

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Modulation-free BiPbSrLCuO6 (L = La, Pr, Nd) and BiPbSr2YCu2O8, which are isotypic with the n = 1 and 2 members of the Bi2Sr2Ca(n-1)Cu(n)O2n+4 family, have been prepared and characterized. These parent compounds are nonsuperconducting, but when doped with holes by substitution chemistry give modulation-free superconducting cuprates of the general formulas BiPbSr(1+x)L(1-x)CuO6 and BiPbSr2Y(1-x)Ca(x)Cu2O8, exhibiting maximum T(c)'s of 24 and 85 K, respectively. Significantly, the hole concentration at the maximum T(c) is 0.12 in the cuprate family with a single Cu-O layer and 0.22 in that with two Cu-O layers.

引用

页码：8686 / 8689

页数：4

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