| Ferroelectric (Pb1-x,Bax)TiO3 (PBxT) materials can be synthesized by a sol-gel process incorporating acetylacetone as a chelating agent to form ligand with titanium isopropoxide. It was found that a less cross-linking gel obtained at 120° C and could be converted to nanometric-sized perovskite phase powder. A high purity of (Pb0.5,Ba0.5)TiO3 powder was obtained at 500° C, with a nano-meteric size of about 30-50 nm the specific surface area of 21.91 m2/g. Furthermore, highly oriented PBxT thin films were obtained by utilizing the as-prepared sol spin-coating on (100) MgO substrate. The oriented films were synthesized from all compositions between x = 0.2 and x = 0.8, at a crystallization temperature of 600° C. In particular, for the Ba content in the range of x = 0.5∼0.6, highly preferred (001)/(100) planes were observed. |
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