Piezoelectric transducer having a crystal orientation selected f

Details Piezoelectric transducer having a crystal orientation selected f Piezoelectric transducer having a crystal orientation selected f

1977-04-25

1978-09-05

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310360, H01L 4118

Patent

active

RE0297550

ABSTRACT:
A lithium niobate piezoelectric single crystal transducer having selected rotational orientations with respect to X, Y and Z rectangular coordinate axes. Compressional mode accelerometers having low or zero shear and torsion sensitivity are provided in which the crystal is oriented, in IRE notation, as (a) a (yxl) +38.6.degree. cut or symmetrical equivalents thereof, such as (zxl) (b) a +60.degree./+51.4.degree. cut. Shear mode accelerometers having low or zero compression sensitivity are provided in which the crystal is oriented, in IRE notation, as (a) (xyl) +31.7.degree. cut, or symmetrical equivalents, and (b) an (xyl) +76.7.degree. cut.

REFERENCES:
patent: 3528765 (1970-09-01), Fay
patent: 3591813 (1971-06-01), Coquin
Ultrasonic Transducer Materials, by Mattiat, Plenum Press, 1971, pp. 97, 136 and 148-151.

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