以碘化钇（III）为起始原料，在较低温度下制备YBCO超导材料。应用于固态合成新化合物Y21I18C14B7，这是第一个具有错配特性的间隙卤素原子的稀土金属卤化物。 Yttrium(III) iodide, is used as a starting material for YBCO superconducting materials in a lower temperature preparation. Applied in the solid-state synthesis of a new compound, Y21I18C14B7, which is the first example of a rare earth metal halide with interstitial halogen atoms with misfit characteristics.