SYNTHESIS STRUCTURE AND SUPERCONDUCTIVITY IN ALL-PEROVSKITE-LAYERED TITANIUM CUPRATES

被引：14

作者：

PALACIN, MR ^{[1
]}

FUERTES, A ^{[1
]}

CASANPASTOR, N ^{[1
]}

GOMEZROMERO, P ^{[1
]}

机构：

[1] CSIC,INST CIENCIA MAT BARCELONA,E-08193 BARCELONA,SPAIN

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 119卷 / 02期

关键词：

D O I：

10.1016/0022-4596(95)80036-O

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A study on the reaction pathways, the synthesis, and the range of stability of complex perovskites in the system Ln-(Sr/Ba)-Cu-Ti is reported. Several possibilities for the Cu:Ti stoichiometry were explored with the aim of isolating potentially superconducting layered phases. A bulk superconducting phase of the formula YSr2Cu2.7Ti0.3O8-delta with a T-c of 26 K was isolated and a whole family of layered oxides of the formula Ln(2)Ba(2)Cu(2)Ti(2)O(11-delta) was characterized. We have determined the limits of this family which extends from Ln = La to Tb. The studies reported include X-ray and electron diffraction, and TGA and magnetic susceptibility measurements. Structural and magnetic correlations for these oxides are analyzed. (C) 1995 Academic Press, Inc.

引用

页码：224 / 236

页数：13

共 59 条

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