Sol-gel processing of precursor for high-Tc superconductors:: influence of rhenium on the synthesis of Ba2Ca2Cu3Ox

被引：31

作者：

Sin, A

Odier, P

Núñez-Regueiro, M

机构：

[1] CNRS, Cristallog Lab, F-38042 Grenoble 09, France

[2] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France

来源：

PHYSICA C | 2000年 / 330卷 / 1-2期

关键词：

Hg-based superconductors; HgBa2Ca2Cu3O8; sol-gel;

D O I：

10.1016/S0921-4534(99)00583-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A sol-gel method for processing precursors of mercury-cuprates is described. It uses the gelification of a solution by acrylamide polymerisation and may be applied to concentrated solutions if a proper stabilisation of the cations is ensured. The method is described here for Ba2Ca2Cu3Ox and Re0.25Ba2Ca2Cu3Ox but may serve to other precursors. Barium carbonate contamination is avoided in a large extent and Re-addition even helps by its efficient combination at low temperature with barium species. The precursor, with Re, might be handled without complicated precautions. Superconductors have been prepared in this way with an excellent homogeneity and high T-c. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：9 / 18

页数：10

共 30 条

[1]

ADACHI S, 1997, STUDIES HIGH TEMPERA, V23, P163

[2] Stability of Hg-based high-Tc superconducting thin films [J].