INFLUENCE OF SOL-GEL METHODS ON THE SUPERCONDUCTING YBA2CU3O7-X PHASE

被引：29

作者：

CATANIA, P ^{[1
]}

HOVNANIAN, N ^{[1
]}

COT, L ^{[1
]}

THI, MP ^{[1
]}

KORMANN, R ^{[1
]}

GANNE, JP ^{[1
]}

机构：

[1] THOMSON CSF,CENT RECH LAB,F-91401 ORSAY,FRANCE

来源：

MATERIALS RESEARCH BULLETIN | 1990年 / 25卷 / 05期

关键词：

D O I：

10.1016/0025-5408(90)90029-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The superconducting YBa2Cu3O7-x properties depend critically on the preparation method. Different sol-gel syntheses : alkoxoacetylacetonate, acetate, nitrate/PAA, acetate/PAA routes (with PAA : polyacrylic acid) are compared. The involved reaction mechanisms were investigated and the intermediate and final products were characterized by Infrared spectroscopy, DTA and TGA, X-Ray diffraction analysis, Scanning Electron Microscopy and electrical measurements. The highest electrical properties of the bulk material have been obtained by nitrate/PAA route (Tcoff = 91.8K, ΔTc = 1K, Jc = 420Acm-2). Method using carboncontaining precursors generated much BaCO3 and/or BaCuO2 phases during the synthesis which decrease critical temperature. © 1990.

引用

页码：631 / 642

页数：12

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