Anionic substitutions in Bi-2223 superconductor

被引：5

作者：

Vit, Jakes ^{[1
]}

Dagmar, Sykorova ^{[1
]}

Olga, Smrckova ^{[1
]}

机构：

[1] Prague Inst Chem Technol, Dept Inorgan Chem, CR-16628 Prague 6, Czech Republic

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2007年 / 68卷 / 5-6期

关键词：

superconductors; electrical properties; superconductivity;

D O I：

10.1016/j.jpcs.2007.03.002

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Samples of nominal stoichiometry Bi1.6Pb0.4Sr2Ca2.5Cu3.5Ox-zFz and Bi1.6Pb0.4Sr2Ca2.5Cu3.5Ox-z(SO4)(z) (z = 0, 0.3, 0.6 and 0.9) were prepared by standard solid state reaction from appropriate oxides, carbonates, copper (II) fluoride, and copper (II) sulphate. Superconducting properties of the samples were characterized by measuring of temperature dependency of their electrical resistivity and critical current density, their phase composition was determined by X-ray diffraction (XRD) and element composition by X-ray fluorescence (XRF). While greater amount of fluorine widens the superconducting transition and worsens transport properties, the less doped sample shows increase in critical current density. Sulphur-doped samples show no superconducting transition at all. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1014 / 1016

页数：3

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