INFLUENCE OF MG ON THE SUPERCONDUCTIVITY AND PHASE-COMPOSITION OF SAMPLES FROM THE BI-PB(SB)-MG-SR-CA-CU-O SYSTEM

被引：0
|
作者：
KONSTANTINOV, K
KARBANOV, S
MITSULOV, A
HINKOV, P
机构：
[1] Higher Institute of Chemical Technology, Sofia, 1156
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 1991年 / 2卷 / 03期
关键词：
D O I：
10.1007/BF00696284
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Superconducting oxide materials, containing Bi, Mg, Pb(Sb), Sr, Ca and Cu in various nominal stoichiometric proportions, are synthesized. The critical temperature of the samples is in the range of 90 to 96 K. The chemical and phase composition of the materials is investigated by emission spectral analysis and X-ray diffraction measurements, and the microstructure by scanning electron microscopy. It is established that the addition of magnesium results in the formation of a 15 K phase Bi2Sr2Cu1O6 + beta. Superconductivity is also observed at around 95 K in the Bi-Sb-Mg-Sr-Ca-Cu-O system.
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页码：125 / 128
页数：4
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