Skip to main content
Defect Structure of Lead Pyroniobates
Institute of Physics Conference Series (2001)
  • Rick Ubic, Boise State University
  • J. C. Merry
  • A. C. Leach
  • I. M. Reaney, University of Sheffield
The crystal structure of defect pyrochlores in the PbO - Nb2O5 system have been investigated by powder x-ray diffraction, electron diffraction, and high-resolution electron microscopy. Single-phase cubic pyrochlore was obtained for PbaNb2O5+n (n = 1.5); but for n > 1.5, discreet Pb-rich layers were observed in a manner similar to Ruddlesden Popper and Aurivillius phases. The appearance of these defect layers, which form on <111> planes of the parent pyrochlore, results in a lowering of the overall symmetry to trigonal.
Publication Date
Citation Information
Rick Ubic, J. C. Merry, A. C. Leach and I. M. Reaney. "Defect Structure of Lead Pyroniobates" Institute of Physics Conference Series Vol. 168 (2001)
Available at: