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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kovacs, G. Trattnig, G. Langer, E. |
| Copyright Year | 1988 |
| Description | Author affiliation: Inst. fuer Allgemeine Elektrotech. & Elektronik, Tech. Univ. Wien, Austria (Kovacs, G.; Trattnig, G.; Langer, E.) |
| Abstract | A nonlinear least-squares algorithm to determine the material constants of LiNbO/sub 3/ from primary SAW (surface acoustic wave) velocity measurements is shown. If the values of the mass density and the unclamped permittivities are known at least to some accuracy, all 13 independent elastic, piezoelectric, and dielectric constants are obtained with high precision. While measurements on Y-cut LiNbO/sub 3/ do not provide enough information to perform this task, the SAW velocities on 128 degrees -rot-Y-cut LiNbO/sub 3/ are sensitive to all material constants. This method is not restricted to LiNbO/sub 3/ only, but can be applied to other strong coupling materials (e.g. LiTaO/sub 3/) as well. |
| Starting Page | 269 |
| Ending Page | 272 |
| File Size | 367121 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/ULTSYM.1988.49381 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1988-10-02 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Piezoelectric materials Surface acoustic waves Velocity measurement Dielectric materials Acoustic materials Acoustic waves Permittivity Dielectric constant Acoustic measurements Dielectric measurements |
| Content Type | Text |
| Resource Type | Article |
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