SUBSTITUTION OF MERCURY FOR THALLIUM IN THE 2223-CUPRATE - THE 130K-SUPERCONDUCTOR TL1.6HG0.4BA2CA2CU3O10-DELTA

被引：17

作者：

GOUTENOIRE, F

MAIGNAN, A

VANTENDELOO, G

MARTIN, C

MICHEL, C

HERVIEU, M

RAVEAU, B

机构：

[1] Laboratoire CRISMAT-URA 1318- ISMRa / Université de Caen, 14050 Caen Cedex, Bd du Maréchal Juin

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 90卷 / 01期

关键词：

D O I：

10.1016/0038-1098(94)90960-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A new superconductor, Tl1.6Hg0.4Ba2Ca2Cu3O10+delta , has been synthesized, with a Tc of 130K and a diamagnetic volume fraction of 38%. The possibility to substitute mercury for thallium in the 2223 cuprate is demonstrated. The refined cell parameters, a = 3.843 (1) angstrom and c = 35.816 angstrom (7) are close to those of the undoped oxide. The electron diffraction and high resolution electron microscopy investigations evidence that the stacking of the layers along cBAR is more perfect than in the pure 2223 thallium cuprate. Some regular intergrowths of the 2223 and the 2212 members are observed. Critical temperature and diamagnetic volume fraction are slightly improved by annealing under reducing atmosphere. The role of mercury is discussed.

引用

页码：47 / 50

页数：4

共 13 条

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