Structure of the single-phase high-temperature superconductor YBa2Cu3O7−δ
Mark A. BenoArgonne National Laboratory, Argonne, Illinois 60439L. SoderholmArgonne National Laboratory, Argonne, Illinois 60439D. W. CaponeArgonne National Laboratory, Argonne, Illinois 60439D. G. HinksArgonne National Laboratory, Argonne, Illinois 60439J. D. JorgensenArgonne National Laboratory, Argonne, Illinois 60439J. GraceArgonne National Laboratory, Argonne, Illinois 60439Iván K. SchullerArgonne National Laboratory, Argonne, Illinois 60439Carlo U. SegreIllinois Institute of Technology, Chicago, Illinois 60616Kuilin ZhangIllinois Institute of Technology, Chicago, Illinois 60616
1987en
ABI
Аннотация
We have determined the crystal structure of the single-phase stoichiometric high-temperature superconductor in the Y-Ba-Cu-O system using high-resolution neutron powder diffraction. This compound has an orthorhombic structure with space group Pmmm and lattice constants a=3.8231 Å, b=3.8864 Å, and c=11.6807 Å. The structure consists of ‘‘dimpled’’ CuO2 layers in the a-b planes loosely bonded by one-dimensional fencelike square-planar CuO3 chains in the b-c planes.
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