A NOVEL AUTOIGNITED COMBUSTION PROCESS FOR THE SYNTHESIS OF BI-PB-SR-CA-CU-O SUPERCONDUCTORS WITH A T(C)(0) OF 125 K

被引：24
作者：
DEVI, PS
MAITI, HS
机构：
[1] Electroceramics Laboratory, Central Glass and Ceramic Research Institute, Calcutta
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1994年 / 109卷 / 01期
关键词：
D O I：
10.1006/jssc.1994.1067
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Zero resistivity at 125 K has been observed for the first time in bismuth system with the nominal composition Bi1.75Pb0.25Sr2Ca2 Cu3O10+δ by applying a novel autoignited combustion process. The thermal decomposition characteristics of the gel and the sequence of formation of the superconducting phases are described. This combustion process is very simple, convenient, and nonexplosive, as well as economical for large scale production, of fine powder samples with higher degree of homogeneity, excellent sinterability, and reproducibility. The low Tc and the high Tc phases started forming at temperatures as low as 750 and 800°C, respectively. Powders formed have an average agglomerate size of around 0.8 μm. © 1994 Academic Press, Inc.
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页码：35 / 42
页数：8
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