Cylinder Resonator

The cylinder resonator has the following geometry;

The arrows represent the sample poling directions. The resonance is generated by applying a field between the inner and outer radius of the specimen. This radial mode then couples with a length expansion mode to form the cylinder resonance. The limits in dimension should ensure that the resonance will be free of coupling with other resonance modes.

The resonance observed in the sample admittance is described by the following equation;

By fitting this equation to the observed resonance, the following material properties can be determined;

s^E₁₁, s^E₁₂, d₃₁, e^T₃₃, k₃₁

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