Abstract
Abstract High volume (hydrostatic) sensitivity of piezoelectric substances can be achieved by increasing piezoelectric properties and their anisotropy. The object of work is to create artificial anisotropy, i.e. to increase the product of volume sensitivity coefficient gh and volume piezomodulus d h (g h·d h) = ζ h in heterogeneous piezoelectric structures-composites-containing a piezoelectric phase (ceramics or modified crystals SbSJ) and an inactive (polymeric or inorganic) phase. In case of structures containing SbSJ the problem was to increase not only g h and ζ h but also Curie point T c and thermal stability of the material. The developed materials and piezoelectric elements were applied in receiving hydroacoustic transducers (hydrophones).
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