Accelerated formation of 110 K highTcphase in the Ca‐ and Cu‐rich Bi‐Pb‐Sr‐Ca‐Cu‐O system
作者:
Y. T. Huang,
R. G. Liu,
S. W. Lu,
P. T. Wu,
W. N. Wang,
期刊:
Applied Physics Letters
(AIP Available online 1990)
卷期:
Volume 56,
issue 8
页码: 779-781
ISSN:0003-6951
年代: 1990
DOI:10.1063/1.103315
出版商: AIP
数据来源: AIP
摘要:
The crystal structure and superconducting properties of the Bi‐Pb‐Sr‐Ca‐Cu‐O system with Ca‐ and Cu‐rich nominal composition were investigated. A nearly single‐phased 110 K highTcsuperconductor can be obtained with 852 °C/20 h sintering from the starting composition of Bi1.7Pb0.4Sr1.6Ca2.4Cu3.6Oy. X‐ray diffraction patterns, resistivity measurement, diamagnetic susceptibility results, and scanning electron micrographs all indicate that the Ca‐ and Cu‐rich nominal composition would result in better superconducting properties than those of Ca:Sr=1:1 Bi‐Pb‐Sr‐Ca‐Cu‐O compounds in a much shorter sintering time.
点击下载:
PDF
(326KB)
返 回