Oxygen Relief/Absorption and Superconductivity of Bi-Pb-Sr-Ca-Cu-O Compounds
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG1990年第6期
论文作者：覃作祥 张彦生 朱乃平
文章页码：431 - 434
摘 要：<正> The oxygen relief/absorption,superconduc—tivity and structure of(Bi1-xPbx)2Sr2Ca2—Cu3Oy compounds have been studied by TGA,electrical resistance measurement and X-raydiffraction.The amount of oxygen which can be re-leased and superconductivity of the compounds arecorrelative to Pb content.The release of oxygen in-creases when x less than 0.2 and decreases when xexceeds 0.2 with increasing x.The appropriate con-tent of Pb for superconductivity is in the range of0.1<x<0.3,which corresponds to the relative largeamount of oxygen that can be released.It is foundaccording to electric resistance measurement thatquenching is favourable to form the‘85K’phaseand slow cooling the‘110K’phase.The experimen-tal results suggest that a relation exists between thesuperconductivity and the oxygen content in Bi sys-tem containing Pb.As the Tc of‘85K’phase de-creases and that of‘110K’phase increases with in-creasing oxygen content,it is possible that the effectof oxygen content in‘85K’phase and‘110K’phase on the superconductivity is different.
覃作祥，张彦生，朱乃平
摘 要：<正> The oxygen relief/absorption,superconduc—tivity and structure of(Bi1-xPbx)2Sr2Ca2—Cu3Oy compounds have been studied by TGA,electrical resistance measurement and X-raydiffraction.The amount of oxygen which can be re-leased and superconductivity of the compounds arecorrelative to Pb content.The release of oxygen in-creases when x less than 0.2 and decreases when xexceeds 0.2 with increasing x.The appropriate con-tent of Pb for superconductivity is in the range of0.1<x<0.3,which corresponds to the relative largeamount of oxygen that can be released.It is foundaccording to electric resistance measurement thatquenching is favourable to form the‘85K’phaseand slow cooling the‘110K’phase.The experimen-tal results suggest that a relation exists between thesuperconductivity and the oxygen content in Bi sys-tem containing Pb.As the Tc of‘85K’phase de-creases and that of‘110K’phase increases with in-creasing oxygen content,it is possible that the effectof oxygen content in‘85K’phase and‘110K’phase on the superconductivity is different.
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