本文采用固相反应法成功制备出一系列Y123与Y211的摩尔比为1：x（x=0、0．14、0．27、0．3、0．35、0．4、0．45、0．47、0．5、0．8、1．18）的样品．实验结果表明：在0．35≤x≤0．5范围内，Y123的起始转变温度Tonset临界转变温度Tc以及转变宽度△Tc都在x=0．47出现了拐点，这说明了x=0．47为最佳掺杂比例，本文同时也简单阐述了Y123的晶格结构是如何改变其超导电性的．
A series of superconductor samples that the molar ratio of Y123 and Y211 is 1 ： x（x=0.0. 14.0. 27.0. 3. 0. 35.0.4.0.45.0. 47.0. 5.0. 8.1.18） were prepared by solid-state reaction method. The results show that the onset transition temperature Tonset, the critical transition temperature Tc and the transition width △Tc of Y123 appeared inflexion when x value is 0. 47 （0. 35≤x≤0. 5） . Therefore, it illustrates fully that 0. 47 is the best doping ration. At the same time, this paper also analyzes simply that how the change of Y123 lattice structure affects their superconductivity.
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