Zero Temperature Coefficient Surface-Acoustic-Wave Delay Lines on AlN/Al2O3
- 1 May 1982
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 21 (5A) , L303-304
- https://doi.org/10.1143/jjap.21.l303
Abstract
We have investigated the temperature dependence of surface acoustic wave (SAW) delay time on AlN films grown by metalorganic chemical vapor deposition (MO–CVD) on the basal plane of sapphire (Al2O3). The temperature coefficient of delay for AlN/Al2O3 structures for SAW propagation along the [11̄00] Al2O3 direction decreased with increasing k H, where k is the wave number and H is the thickness of AlN films. We have succeeded in realizing zero temperature coefficient SAW delay lines at a certain value of k H.Keywords
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