Ultrathin barium titanate films by polyol thermal decomposition process
نویسندگان
چکیده
منابع مشابه
Pyroelectric properties of barium strontium titanate films: Effect of thermal stresses
A nonlinear thermodynamic model is used to investigate the influence of thermal stresses on the room temperature RT pyroelectric properties of 001 -textured polycrystalline barium strontium titanate BaxSr1−xTiO3, BST films with four different compositions on three integrated circuit-friendly substrates: Si, 0001 and 1̄1̄20 sapphire. It is found that the in-plane tensile thermal strain in BST incr...
متن کاملPhotoluminescence of barium titanate and barium zirconate in multilayer disordered thin films at room temperature.
The emission of wide band photoluminescence showed a synergic effect on barium zirconate and barium titanate thin films in alternate multilayer system at room temperature by 488 nm exiting wavelength. The thin films obtained by spin-coating were annealed at 350, 450, and 550 degrees C for 2 h. The X-ray patterns revealed the complete separation among the BaTiO3 and BaZrO3 phases in the adjacent...
متن کاملHigh tunability in compositionally graded epitaxial barium strontium titanate thin films by pulsed-laser deposition
Compositionally graded barium strontium titanate @(BaxSr12x)TiO3—BST, x50.75, 0.8, 0.9, and 1.0# thin films are fabricated by pulsed-laser deposition on a LaAlO3 substrate with (La0.7Sr0.3)MnO3 as the bottom electrode. A high dielectric permittivity and temperature characteristic without Curie–Weiss law are obtained. A tunability of over 70% is obtained at frequency of 1 MHz, which is higher th...
متن کاملRealization of high tunability barium strontium titanate thin films by rf magnetron sputtering
Ferroelectric thin films are currently being used to develop tunable microwave circuits based on the electric-field dependence of the dielectric constant. (Ba0.5Sr0.5)TiO3 ~BST! films prepared by sputtering on Pt/TiO2 /SiO2 /Si substrates are found to exhibit a capacitance change ~tunability! of nearly 4:1. Higher tunability has been attributed to the ~100! texturing of the BST films and is a r...
متن کاملCharacteristics of the surface layer of barium strontium titanate thin films deposited by laser ablation
Ba0.5Sr0.5TiO3 ~BST! thin films grown on Si by an in situ ultraviolet-assisted pulsed laser deposition ~UVPLD! technique exhibited significantly higher dielectric constant and refractive index values and lower leakage current densities than films grown by conventional PLD under similar conditions. X-ray photoelectron spectroscopy ~XPS! investigations have shown that the surface layer of the gro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Materials Science
سال: 2010
ISSN: 0022-2461,1573-4803
DOI: 10.1007/s10853-010-4850-4