D1.4 - High-Temperature Stable Electrodes for Langasite Based Surface Acoustic Wave Devices

D. Richter & H. Fritze
Piezoelectric single crystals like langasite, langatate or gallium orthophosphate enable the development of high-temperature stable surface acoustic wave devices for sensor applications in harsh environments. Although e.g. langasite shows piezoelectric behavior up to its melting point at 1470 °C, the operation of piezoelectric devices is limited by the hightemperature stability of electrode materials and packaging. The electrodes should remain stable under harsh conditions at high temperatures while exhibiting a good adhesion on langasite as well...