应用化学 ›› 1990, Vol. 0 ›› Issue (1): 74-75.
• 研究简报 • 上一篇 下一篇
李言荣, 李有谟
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Li Yanrong, Li Youmo
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摘要： 据报,在BiPbSrCaCuO中加Sb形成BiPbSbSrCaCuO体系的Tc可达130K[1]。但其组成、结构、性质等均未见详细报道。我们合成了一系列BiPbSbSrCaCuO,发现了一个具有2212相结构、但Tc却为～110K的超导相。 试样制备包括将Bi2O3,PbO,Sb2O3,SrCO3,CaO和CuO(AR级)混匀、碾磨、于800℃预烧10h,再碾碎压片后在840-860℃烧结,淬火后取出测Tc和XRD。
关键词: 超导电性, 铋铅锑锶铜氧化物
Abstract: Incorporating Sb to BiPbSrCaCuO system led to the appearance of a second phase.Besides this impure phase the XRD pattern of the main phase of Bil6 Pb0.4Sb10Sr1.5-2.0Ca2Cu2Oy could be indexed with a tetragonal structure with cell parameters a=0.54 andc=3.06nm, i.e. it corresponds to the low-Tc phase of BiSrCaCuO system,the so called 2212phase.It is of interest to indicate that this phase(with Sb and Pb incorporation)showed aTc at～110K and Tonset at～120K favorably close to that of the high-Tc phase ofBi(Pb)SrCaCuO system the so called 2223 phase.It is also observed that the c-axis wasincreased from 3.06nm to 3.08nm and Tc was increased as the ignition time waslengthened.
Key words: superconductor, bismuth lead antimony strontium calcium copper oxide
李言荣, 李有谟. BiPbSbSrCaCuO的超导电性[J]. 应用化学, 1990, 0(1): 74-75.
Li Yanrong, Li Youmo. SUPERCONDUCTIVITY IN BiPbSbSrCaCuO SYSTEM[J]. Chinese Journal of Applied Chemistry, 1990, 0(1): 74-75.
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