BI CUPRATES OF TYPE 1212 - A NEW FAMILY OF SUPERCONDUCTORS IN THE BI SERIES

被引：9

作者：

EHMANN, A ^{[1
]}

FRIES, T ^{[1
]}

KEMMLERSACK, S ^{[1
]}

LOSCH, S ^{[1
]}

PAULUS, W ^{[1
]}

SCHULZ, C ^{[1
]}

WISCHERT, W ^{[1
]}

ZOLLER, P ^{[1
]}

机构：

[1] CENS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 195卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(93)90686-H

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Studies of the influence of chemical composition and post-treatment on the superconducting properties of the new superconducting family Bi-1212 indicate that the superconducting transition temperatures as well as the superconducting volume fraction are dependent on both parameters. The highest T(c) = 84K is obtained for Bi:Pb:Sr:Y:Cu = 0.4:0.3:2:0.6:2.1 after post-annealing in flowing Ar (600-degrees-C/50h). From the uniform observation of an increase of the superconducting volume fraction after post-annealing at moderate temperatures (500-700-degrees-C) follows the important correlation between a certain crystalline order and the development of superconductivity; actually values up to a Meissner fraction of about 10% are obtained.

引用

页码：57 / 60

页数：4

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