Abstract
The physical properties of nanocomposite materials which contain nanoparticles of metals and their compounds stabilized within a polymeric dielectric matrix are currently being studied. These materials show a low acoustic impedance, resulting in their use as low-perturbing substrates for thin piezoelectric plates, as well as matching and damping layers for bulk acoustic wave devices. Mechanical properties of the materials which contain various Fe and Fe2O3 nanoparticle concentrations are experimentally defined in the paper. It has been shown that the acoustic impedance of the materials under study may be varied by more than 30% and 40% for longitudinal and shear acoustic waves, respectively, within the same technological procedure. The velocities of bulk longitudinal and shear acoustic waves can be purposefully changed by more than 40% and 29%, respectively.
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