Abstract
The unit cell wave attenuation of elastic Bloch waves in 1-3 piezoelectric phononic structures with BaTiO3 inclusions in a polymeric matrix is reported. This attenuation can be observed by the evanescent Bloch waves in the complex dispersion diagram of the periodic piezoelectric ceramic structure. Full and complete Bragg-type band gaps are observed. The piezoelectricity of the periodic lead-free ceramic inclusions improves the band gap width and wave attenuation in a specific frequency spectrum. These characteristics can be used for the wave attenuation design using smart periodic structures, for surface acoustic wave (SAW) filter and 1-3 piezocomposite transducer design using piezoelectric phononic structures with BaTiO3 inclusions.
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