Effect of Octahedral Tilt Transitions on the Properties of Perovskites and Related Materials

摘要

The influence of octahedral tilt transitions onelectric properties is rarely considered and poorly understood.Recent work has identified a relationship between the tolerancefactor, octahedral tilting and the temperature coefficient of thedielectric constant (#tau#_(#epsilon#)) in Sr and Ba basedcomplex perovskites. This paper discusses the relationship betweenoctahedral tilting and properties in the perovskite relatedcompounds, Ba_(6-3x)Ln_(8+2x)Ti_(18)O_(54).