“Charge transfer from AA´-O to B-O bonds in SrxBa1-xHfO3 compounds”

A. R. LÓPEZ-GARCÍA AND R. E. ALONSO

Fox de Iguazu, Brasil

Congreso; International Meeting on Ferroelectricity; 2005

CONICET-CNPQ

A study of Sr1-xBaxHfO3 perovskites with composition x = 0, 0.12, 0.25, 0.50, 0.75, 0.88 and 1 using XR-diffraction analysis has been performed. The crystalline structures as well as the lattice constants have been determined at room temperature. The electron distribution in the unit cell of ABO3 determines the bonds between A and B cations with oxygen. Comparing cation–oxygen distances with the corresponding sum of the cation plus the anion radii it is possible to infer the character of the bonds and to interpret their behavior with composition.   RUNNING HEAD: Charge transfer from AA´-O to B-O bonds