“…Welberry, Butler, Thompson & Withers (1993), however, attacked the single-vacancy microdomain as being not chemically plausible. Therefore, we reinvestigated this problem by neutron and X-ray data, since Neder, Frey & Schulz (1990b) could not fully exclude the existence of microdomains with only zirconium as next neighbours to the oxygen vacancy from their calculations based on neutron scattering data exclusively. The combined refinement of neutron and X-ray data should give a more reliable insight into the defect structure of stabilized zirconia.…”