The effect of Tb doped PbTiO3 inducing layer on texture and tunable property of sol-gel derived Pb0.4Sr0.6TiO3 thin films grown on ITO/glass substrate

Highly (1 0 0)-oriented Pb0.4Sr0.6TiO3 (PST40) thin films have been prepared on the Tb doped PbTiO3 (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 PbTiO3 can be used as an inducing layer for highly (1 0 0)-oriented tunable materials on ITO/glass substrate.