COMPOSITION-INDUCED SUPERCONDUCTIVITY (UP TO 55-K) IN THE SYSTEM (PB0.75CU0.25)SR2(CA1-XYX)CU2O7-DELTA

被引：32

作者：

LIU, RS ^{[1
]}

HU, SF ^{[1
]}

GAMESON, I ^{[1
]}

EDWARDS, PP ^{[1
]}

MAIGNAN, A ^{[1
]}

ROUILLON, T ^{[1
]}

GROULT, D ^{[1
]}

RAVEAU, B ^{[1
]}

机构：

[1] INST SCI MAT & RAYONNEMENT,CRISTALLO G & SCI MAT LAB,F-14050 CAEN,FRANCE

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 93卷 / 01期

关键词：

D O I：

10.1016/0022-4596(91)90301-W

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We demonstrate a compositionally induced superconductor-to-semiconductor transition in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ. Superconducting behavior is observed over the composition range 0.1 ≤ x ≤ 0.6. Samples with 0.1 ≤ x ≤ 0.3 are multiphasic, but the superconducting transition temperature is a maximum (55 K) over this range of compositions. The sample having x = 0.5 gives rise to an acceptable phase purity, a superconducting transition temperature of 45 K, and the maximum superconducting (Meissner) volume fraction (20.2%). A superconductor-to-semiconductor transition occurs at x = 0.7. © 1991 Academic Press, Inc.

引用

页码：276 / 282

页数：7

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