Presentation Information

1:15 PM - 1:30 PM JST(4:15 AM - 4:30 AM UTC)

[20p-A309-2]Determination of Nonlinear Constants of Lithium Tantalate Single Crystal

〇Yasuo Cho¹, Ryo Nakagawa², Toshimaro Yoneda², Takeshi Nakao², Mamoru Ikeura² (1.Tohoku University, 2.Murata Manufacturing Co., Ltd)

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Keywords:

nonlinear constants,LiTaO3

We have started research aimed at realizing next-generation low-nonlinear surafce acoustic wave (SAW) devices and have determined a full set of nonlinear constants for LiTaO₃ single-crystals. In order to determine these nonlinear constants, it is necessary to measure the rate of change of sound velocity and dielectric constant under stress and electric field application for a large number of crystal orientations. In this presentation, we report the results of measurements of nonlinear 14 elastic, 13 piezoelectric, 8 electrostrictive, and 3 dielectric constants for a full set of crystals.

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