Y-Ba-Cu-O 体系超导相结构的研究

A STUDY OF STRUCTURE OF SUPERCONDUCTING PHASE ON Y-Ba-Cu-O SYSTEM

Y-Ba-Cu-O 超导相结构己用单晶四园 X 射线衍射方法测定。晶体属正交晶系。Pmmm 空间群,品格参数是 a=3.855(2)(?),b=3.857(2)(?),c=11.653(3)(?)。超导相的实验式为 YBa_2Cu_(2.84)O_(6.85).

The crystal structure of the superconducting phase of the Y-B-C-O system has boon determined by the single crystal X-ray diffraction technique.The crystal is orthorhombic with space group Pmmm,lattice parameters a=3.858 ■(2),b=3.857■(2),c=11.653■(3).The stoichiometric formula determined in the experiment is YBa_2 Cu_(2.84)O_(6.58)