Characteristics of acoustic plate waves in potassium niobate (KNbO3) single crystal

✍ Scribed by B.D Zaitsev; I.E Kuznetsova; I.A Borodina; S.G Joshi

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 224 KB
• Volume: 39
• Category: Article
• ISSN: 0041-624X
• DOI: 10.1016/s0041-624x(00)00039-1

✦ Synopsis

This paper presents detailed theoretical investigation of three fundamental acoustic wave modes propagating in thin plates of single crystal potassium niobate. The wave velocity and Dvav, the fractional velocity change produced by electrical shorting of the surface, are calculated for all propagation directions on the surfaces of X -, Y -, and Z-cut plates. It is found that acoustic plate waves can provide extremely large values of electromechanical coupling coecient. This property makes these waves very attractive for use in a variety of sensor and signal processing applications.