STOICHIOMETRY VARIATION EFFECT ON THE SUPERCONDUCTING PROPERTIES OF POLYMER-PROCESSED (BI1-XPBX)2SR2CA2CU3O10 CERAMICS

被引：16

作者：

SOTELO, A ^{[1
]}

ANGUREL, LA ^{[1
]}

RUIZ, MT ^{[1
]}

LARREA, A ^{[1
]}

LERA, F ^{[1
]}

DELAFUENTE, GF ^{[1
]}

机构：

[1] UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,MARIA LUNA 3,E-50015 ZARAGOZA,SPAIN

来源：

SOLID STATE IONICS | 1993年 / 63-5卷

关键词：

D O I：

10.1016/0167-2738(93)90210-T

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：

Bismuth family high-temperature superconducting samples with varying initial Pb, Sr and Ca stoichiometries have been prepared using a polymer solution synthesis method. These samples have been characterized by powder X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and magnetic ac susceptibility. The samples which yield the highest percentage of 2223 phase have in common an excess amount of Pb and a deficiency in Sr. The sample with best intragranular properties has a stoichiometry represented by Bi1.8Pb0.35Sr1.87Ca2.1Cu3O10+delta. It is also shown that, in contrast with the intragranular properties, the intergranular properties are irreproducible in almost all the samples studied.

引用

页码：883 / 888

页数：6

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