Abstract
The crystal structure of the high- superconductor has been studied using neutron diffraction. This compound has an orthorhombic structure with space group Pmmm and lattice parameters Å, Å, and Å. We found an occupancy of 0.1 for oxygen atoms at the site and a total number of oxygen atom per unit cell of 7.1. The high quality of the sample used may be associated with the partial occupation at the site by oxygen atoms.
- Received 29 May 1987
DOI:https://doi.org/10.1103/PhysRevB.36.5599
©1987 American Physical Society