Piezoelectric crystal element for acoustic surface wave device

摘要

The piezoelectric crystal element of galliumorthophosphate has a planar acoustic surface wave propagation surface (2), for an acoustic surface wave device, defined by Euler angles lambda of zero or 30 degrees, mu between 80 and 100 degrees, 90 and 130 degrees or between 125 and 160 degrees and eta of zero, between 15 and 35 ,or between 145 and 165 degrees, respectively.