EXAFS study of compositionally homogeneous ZrO2-CaO nanopowders

I.O. FÁBREGAS; D.G. LAMAS; L.M. ACUÑA; R.O. FUENTES; M.E. FERNÁNDEZ DE RAPP; N.E. WALSÖE DE RECA; M.C.A. FANTINI; A.F. CRAIEVICH; R.J. PRADO

2005 Activity Report of the Brazilian Synchrotron Light Laboratory

Laboratorio Nacional de Luz Sincrotron (LNLS)

Año: 2006 p. 705 - 705

1518-0204

The local structure of nanocrystalline ZrO2-based solid solutions exhibiting the metastable forms of the tetragonal phase has not been extensively studied yet. The most complete works deals with nanostructured ZrO2-CeO2 and ZrO2-Y2O3 solid solutions, while no studies have been reported on the ZrO2-CaO system. In this work, we studied the Zr-O bond in compositionally homogeneous ZrO2-CaO nanopowders with CaO contents up to 20 mol%, exhibiting the metastable forms of the tetragonal phase or the cubic one depending on the composition.