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| Lithium
Niobate possesses a high Curie
temperature and excellent
piezoelectric coupling coefficient
making it attractive for ultrasonic
device applications. Lithium Niobate possesses a number of useful cuts that are now extensively used in transducer applications. Two compressional cuts are popular, the Z cut and the 36° rotated Y-cut. It is suitable for applications from 250Khz to 40Mhz. Lithium Niobate possess very large piezoelectric coupling coefficients - several times larger than quartz - and very low acoustic losses. Because of its Curie temperature of 1150° C it can be utilised in high temperature applications. |