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Bi-Sr-Ca-Cu-O体系的掺杂可以改善超导性能和消除堆垛层错。由于铋氧双层的作用还未能很好地了解,我们合成X_2Sr_2Ca_2Cu_3O_(10)的纯相,[X为(Bi_(0.85)Ph_(0.1)In_(0.05)]以确定其是(XOXO)还是(XO_2X),以及如何影响晶体结构,超导性质和生成机理。合成和鉴定CaCO_3、SrO、CuO的混合物于900℃烧结20hr得到Sr_2Ca_2Cu_3O_7,然后与Bi_2O_3、PbO按摩尔比1∶0.87∶0.3混匀,压片,于870℃加热20hr,重新研磨,在880℃加热30hr,再加0.6%mol In_2O_3,于890℃烧结20hr,然后在空气中淬火,样品表面部分微熔。
The doping of Bi-Sr-Ca-Cu-O system can improve superconductivity and eliminate stacking faults. Since the action of bismuth oxy-bilayer has not been well understood, we synthesized the pure phase of X_2Sr_2Ca_2Cu_3O_ (10) [X (Bi_ (0.85) Ph_ (0.1) In_ (0.05)] to determine whether it is (XOXO) (XO_2X), and how it affects the crystal structure, superconductivity and formation mechanism.Synthesis and identification of a mixture of CaCO_3, SrO and CuO at 900 ℃ for 20hr to obtain Sr_2Ca_2Cu_3O_7 followed by mixing with Bi_2O_3 and PbO at a molar ratio of 1: 0.87: 0.3 , Pressed, heated at 870 ° C for 20 hr, reslurried, heated at 880 ° C for 30 hr, then 0.6% mol In_2O_3 sintered at 890 ° C for 20 hr, then quenched in air and the surface of the sample was partially micro-melted.