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Citation: Li Yanrong, Li Youmo. SUPERCONDUCTIVITY IN BiPbSbSrCaCuO SYSTEM[J]. Chinese Journal of Applied Chemistry, ;1990, 7(1): 74-75. shu

SUPERCONDUCTIVITY IN BiPbSbSrCaCuO SYSTEM

Li Yanrong ,
Li Youmo

1.
Changchun Institute of Applied Chemistry, Academia Sinica, Chaingchun 130022

Received Date: 20 May 1989
Available Online: 7 August 1989

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 Bi_1.6Pb_0.4Sb₀₁Sr_1.5-2.0Ca₂Cu₂O_y could be indexed with a tetragonal structure with cell parameters a=0.54 and c=3.06nm, i.e. it corresponds to the low-T_c phase of BiSrCaCuO system,the so called 2212 phase.It is of interest to indicate that this phase (with Sb and Pb incorporation) showed a T_c at ~110K and Tonset at ~120K favorably close to that of the high-T_c phase of Bi(Pb)SrCaCuO system the so called 2223 phase.It is also observed that the c-axis was increased from 3.06nm to 3.08nm and T_c was increased as the ignition time was lengthened.
- superconductor,
- bismuth lead antimony strontium calcium copper oxide
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