PSI-5H4E is an industry type 5H (Navy Type VI) piezoceramic. Thin vacuum sputtered nickel electrodes produce extremely low current leakage and low magnetic permeability. It has high motion per volt sensitivity but its upper temperature range is limited and its properties are more sensitive to temperature.

When an electric field having the same polarity and orientation as the original polarization field is placed across the thickness of a single sheet of piezoceramic, the piece expands along the axis of polarization (thickness direction) and contracts perpendicular to the axis of polarization (length and width direction). The motion in the thickness direction is on the order of tens of nanometers. Motion in the length direction is typically on the order of microns or tens of microns.

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