Nanoparticle calcium stannate (CaSnO3) and calcium titanate (CaTiO3) have b
een prepared by the mechanical milling of mixtures of calcium(II) oxide wit
h tin(IV) oxide or titanium(IV) oxide. The formation of calcium titanate (C
aTiO3) is more easily achieved by milling calcium(II) oxide with the rutile
modification of titanium (IV) oxide than with the anatase form. (C) 2001 K
luwer Academic Publishers.