1. Structure and properties of sol-gel processed (Pb,La)TiO3 ferroelectric thin films
- Author
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Rao Yunhua, Wu Guoan, Wang Peiying, Liu Meidong, Li Churong, and Zeng Yike
- Subjects
Materials science ,Analytical chemistry ,Coercivity ,Condensed Matter Physics ,Epitaxy ,Ferroelectricity ,Electronic, Optical and Magnetic Materials ,Crystallography ,Control and Systems Engineering ,Materials Chemistry ,Ceramics and Composites ,Sapphire ,Electrical and Electronic Engineering ,Thin film ,Single crystal ,Quartz ,Sol-gel - Abstract
The influence of heat treatment and substrate materials on PLT thin films by sol-gel processing has been researched. Epitaxial growth PLT thin films with perovskite-type structure on sapphire, SrTiO3 and MgO single crystal substrates have been prepared. The epitaxial relations are (100)PLT28/(100)SrTiO3, (111)PLT28//(0001)sapphire and (100)PLT14//(100)MgO. The PLT polycrystal thin films with perovskite-type structure on Si single crystal and quartz glass substrates have been prepared. The remanent polarization Pr and the coercive field Ec of PLT15 ceramic thin films are 7.7 μc/cm2 and 34 kv/cm at 4 KHz respectively. The optical transmittance of PLT28 ceramic thin films within the wavelength range of λ = 500–1000 nm is approximately 80%.
- Published
- 1994