Study of the phase transition sequence of mixed silver tantalate-niobate (AgTa1-xNbxO3) by inelastic light scattering

Abstract

Light scattering measurements have been performed on single crystals of the solid solution of silver tantalate-niobate in a temperature range extending from 10 K to about 800 K. The experimental results are analysed and discussed by comparison with dielectric and structural data as functions of temperature and relative Nb and Ta concentrations. The specific contributions of each constituent ion to the phase transition sequence and mechanisms are critically discussed.