The effect of Tb doped PbTiO 3 inducing layer on texture and tunable property of sol–gel derived Pb 0.4Sr 0.6TiO 3 thin films grown on ITO/glass substrate

Abstract

Highly (1 0 0)-oriented Pb 0.4Sr 0.6TiO 3 (PST40) thin films have been prepared on the Tb doped PbTiO 3 (PTT) thin film coated ITO/glass substrate by sol–gel technique. The PTT inducing layers are (1 0 0)-oriented and can help to control the orientation of PST40 thin films. Crystallization of the PST40 thin film with the PTT inducing layer is more perfect than that without PTT layer due to less distortion in the thin film. The dielectric tunability of the PST40 thin film with PTT layer therefore reaches 65%, which is 85% higher than that without PTT layer. The dielectric loss of the PST thin film is only 0.05. These results indicate that (1 0 0)-oriented Tb doped PbTiO 3 can be used as an inducing layer for highly (1 0 0)-oriented tunable materials on ITO/glass substrate.