| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaluation method for a piezoelectric material, for evaluating a degree of magnitude of piezoelectric property in a piezoelectric material, in which even at stage before polarization processing, the degree of magnitude of piezoelectric property can be grasped.SOLUTION: An evaluation method for a piezoelectric material includes: a longitudinal wave velocity acquisition step for acquiring a longitudinal wave velocity at the time when a longitudinal wave, which propagates in a thickness direction of a piezoelectric material, propagates through the piezoelectric material; a transversal wave velocity acquisition step for acquiring a transversal wave velocity at the time when a transversal wave, which propagates in the thickness direction of the piezoelectric material, propagates through the piezoelectric material; a ratio calculation step for calculating a ratio between the longitudinal wave velocity and the transversal wave velocity; and an evaluation step for evaluating a degree of a magnitude of a piezoelectric property of the piezoelectric material from the ratio. |
