NEUTRON-DIFFRACTION STUDY OF TETRAGONAL ZIRCONIAS CONTAINING SN

Neutron powder diffraction was used to study tetragonal (ZrO2 - 2 mol% Y2O3)-M mol% SnO2 at various Sn compositions, M = 0-10. It was confir med that there is an increase in the unit cell volume even though the shortest cation-anion bond distance decreases as expected from the sma ller ionic radius of Sn. This result is explained in terms of charge b alance effects. (C) 1998 Elsevier Science B.V. All rights reserved.