STRUCTURAL AND PHYSICAL-PROPERTIES OF THE NEW SUPERCONDUCTOR HG0.5PB0.5SR4-XBAXCU2(CO3)O-7-DELTA

被引：14

作者：

HUVE, M

VANTENDELOO, G

HERVIEU, M

MAIGNAN, A

RAVEAU, B

机构：

[1] UNIV ANTWERP,RUCA,EMAT,B-2020 ANTWERP,BELGIUM

[2] UNIV CAEN,ISMRA,CRISMAT,F-14050 CAEN,FRANCE

来源：

PHYSICA C | 1994年 / 231卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)90138-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new series of superconducting compounds Hg1-yPbySr4-xBaxCu2(CO3)O-7 has been synthesized. The critical temperature reaches a maximum of 68 K for x = 2; for the x = 1 and y = 0.5 compound, which is mainly studied here, the optimized T-c is around 55 K. All Pb containing compounds exhibit a modulation along the [110] direction, to be attributed to an ordering between (Pb-Hg)O-delta and carbonate groups. This ordering is highly variable depending, among others, on the local CO3 content and gives rise to different commensurate and incommensurate superstructures.

引用

页码：15 / 20

页数：6