Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Structure refinements of superconducting Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ and Tl/sub 2/Ba/sub 2/Cu/sub 3/O/sub 10/ from neutron diffraction data

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
The structures of Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ and Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ were refined from neutron-powder-diffraction data. The data for Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ were taken at 298 K, and the data for Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ were obtained at both 150 and 13 K. The results are essentially in agreement with the structural refinements based on single-crystal x-ray-diffraction data and confirm the positional disorder of the oxygen atoms in the Tl-O planes. The low-temperature refinements for Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ indicate that the symmetry remains tetragonal down to 13 K and that there is no significant structural change or discontinuity in the cell parameters through the superconducting critical temperature near 125 K.
Research Organization:
Physics Department, Brookhaven National Laboratory, Upton, New York 11973
OSTI ID:
7090370
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:10; ISSN PRBMD
Country of Publication:
United States
Language:
English