Barium titanate (BaTiO_3) 0-3 ceramic/ceramic composite thick films (approx 16 um m) for ultrasonic transducer aplications were fabricated by a modified sol-gel process. Nano-sized BaTiO_3 powder was dispersed in a sol-gel matrix of BaTiO_3 to form a 0-3 composite solution. Films were prepared by spin coating and then annealed at various temperatures. the crystallization of the composite film was studied by X-ray diffraction. The dielectric permittivity and the ferroelectric properties of the film were also measured.
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