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Surface Acoustic Wave Ferroelectric Phononic Crystal Based on Electric Field Induced Periodic Domains

V. Pashchenko[1], S. Yankin[2]
[1]Saint Petersburg State Polytechnical University, Saint Petersburg, Russia
[2]State University, Saratov, Russia. Joint International Laboratory LICS/LEMAC, IEMN UMR CNRS 8520, EC Lille, Villeneuve d'Ascq, France
Published in 2013

A novel type of tunable surface acoustic waves (SAW) filter based on 1D phononic crystal controlled by electric is field proposed. The tunability of proposed filter varied over a wide range: 1-20%. Basic idea is electrical controlled induced periodical domains in ferroelectric film based on induced piezoelectric effect.

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