ELECTROMECHANICAL COUPLING COEFFICIENTS FOE SOME MODES OF VIBRATION OF LITHIUM NIOBATE SINGLE CRYSTAL

In this paper formulas of coupling coefficients for thickness extensional and thickness shearing vibration modes along rotated axis for Lithium Niobate were obtained by Methods of matrix calculating and tensor calculating. Electromechanical coupling coefficients of three modes of vibration along rotated axis were calculated. These obtained curves possess some advantage for use of the crystals.