Analysis of shock-wave-actuated ferroelectric power supplies

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Abstract
Electrical pulses with peak powers of a few hundred kilowatts lasting for several microseconds can be obtained by depoling ferroelectric materials with shock waves. This charge release process is most efficient when the shock amplitude is sufficient to induce a transformation to a non-ferroelectric phase. We will consider the cases in which planar shock waves propagate with a constant velocity either in a direction parallel to the material polarization, which we call “axial mode”, or in a direction perpendicular to the polarization, which we call “normal mode.” Under the axial mode conditions, a one-dimensional analysis is valid; the normal mode conditions are inherently two dimensional. Specifically in this paper, we will describe the axial and normal mode electrical response of shock loaded PZT.

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