Pyroelectric, ferroelectric and optic properties of PbTiO/sub 3/ thin films by thermal decomposition of metallo-organic compounds

摘要

PbTiO/sub 3/ thin films were prepared by thermal decomposition of metallo-organic compounds. Pyroelectric and ferroelectric properties of the films prepared from various processing conditions are reported. The dielectric constants of the films on Si wafers and glass ceramic slides are 115 and 83, respectively, and the tangent of loss angle is less than 0.05 at 1 kHz. Spontaneous polarization and remanent polarization of the films on Si wafers are 10.59 uc/cm/sup 2/ and 8.96 uc/cm/sup 2/. The pyroelectric coefficient increases rapidly with increasing annealing temperature and is 1.62*10/sup -8/ C/cm/sup 2/ K (annealed at 600 degrees C). The birefringence of PbTiO/sub 3/ films was measured at 632.8 nm wavelength by the prism-coupling method.