Abstract
In this letter, we show that a longitudinal acoustic wave can be generated in X-cut LiNbO3 (LNO) thin films when a voltage bias is superimposed to the radio frequency signal. Although there is normally no coupling of this wave in X-cut LNO, its electrostrictive behavior combined with bias reaching 3.9 MV/cm induces an electromechanical coupling around 11%. This experiment was performed without acoustic isolation with the LNO substrate (high overtone bulk acoustic resonator configuration).
Highlights
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not
We show that a longitudinal acoustic wave can be generated in X-cut LiNbO3 ͑LNOthin films when a voltage bias is superimposed to the radio frequency signal
Acoustic resonators based on piezoelectric substrates and thin films are nowadays extensively utilized for radio frequencyRFfilters
Summary
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. We show that a longitudinal acoustic wave can be generated in X-cut LiNbO3 ͑LNOthin films when a voltage bias is superimposed to the radio frequency signal.
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