Properties of the solid solution (1x)Na0.5Bi0.5TiO3–(x)BiFeO3
Résumé
This study shows that remarkable electric and magnetic properties aree ncountered within the (1x)Na0.5Bi0.5TiO3 (NBT)–(x)BiFeO3 (BF) solid solution. Dual ferroelectric and magnetic properties are observed intheBF-rich part of thesolid solution implying intrinsic multiferroic character of the compounds.Inaddition,arelaxationphenomenonisevidencedwithintheoverallcompositional domain of the solid solution. This study emphasizes that in the NBT-rich part, the relaxor behaviour is very similartothatofNBT,whilebeyond x ¼ 0.5, it turns to adifferent mechanism of relaxation probably induced by the presence of oxygen vacancies resulting from the mixed valence of their on cations.