Study of the Impact of Non-linear Piezoelectric Constants on the Acoustic Wave Propagation on Lithium Niobate
| Authors | C. Soumali, D. Benatia |
| Affiliations | Laboratoire d’Electronique Avancée (L.E.A), Department of Electronics, University of Batna, Algeria |
| Е-mail | Soumali.chaabane@gmail.com, dj_benatia@yahoo.fr |
| Issue | Volume 8, Year 2016, Number 2 |
| Dates | Received 04 February 2016; revised manuscript received 13 June 2016; published online 21 June 2016 |
| Citation | C. Soumali, D. Benatia, J. Nano- Electron. Phys. 8 No 2, 02013 (2016) |
| DOI | 10.21272/jnep.8(2).02013 |
| PACS Number(s) | 43.25.Fe, 77.65.Dq,77.65. – j |
| Keywords | Surface acoustic wave (2) , Piezoelectric substrate, Nonlinear material constants, Uniform stress, Attenuation coefficients. |
| Annotation | Impact of nonlinear piezoelectric constants on surface acoustic wave propagation on a piezoelectric substrate is investigated in this work. Propagation of acoustic wave propagation under uniform stress is analyzed; the wave equation is obtained by incorporating the applied uniform stress in the equation of motion and taking account of the set of linear and nonlinear piezoelectric constants. A new method of separation between the different modes of propagation is proposed regarding the attenuation coefficients and not to the displacement vectors. Detail calculations and simulations have made for Lithium Niobate (LiNbO3); transformations between modes of propagation, under uniform stress, have been found. These results leads to conclusion that nonlinear terms affect the acoustic wave propagation and also we can make controllable acoustic devices. |
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List of References |
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