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Determination of the Elastic and Piezoelectric Coefficients of Monoclinic Crystals, with particular Reference to Ethylene Diamine Tartrate

1950; IOP Publishing; Volume: 63; Issue: 8 Linguagem: Inglês

10.1088/0370-1301/63/8/305

1747-3837

R. Bechmann,

Optical and Acousto-Optic Technologies

The dynamic determination of elastic and piezoelectric coefficients of crystals belonging to the monoclinic sphenoidal class is discussed using the longitudinal mode of vibration for narrow bars, low-frequency longitudinal and face-shear modes for square plates containing the axis of symmetry, coupled modes for square plates perpendicular to the axis of symmetry and the thickness-shear mode for plates containing the axis of symmetry. A new set of values for the elastic and piezoelectric coefficients and their temperature coefficients for ethylene diamine tartrate is given based on this method. Some properties are considered of face-shear vibrating square plates of ethylene diamine tartrate rotated about the axis of symmetry as functions of the orientation, and of Y-cut plates as functions of the breadth-length ratio