Flexural mode vibrator formed of lithium tantalate

Details Flexural mode vibrator formed of lithium tantalate Flexural mode vibrator formed of lithium tantalate

1979-10-24

1985-06-25

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, 310370, H01L 4108

Patent

active

045256462

ABSTRACT:
A lithium tantalate (LiTaO.sub.3) vibrator comprises a lithium tantalate crystal vibratable in the flexural mode and having an electro-mechanical coupling factor within the range 0.04 to 0.10. The crystal may have a tuning fork shape cut from a Z-plate turned an angle of 48.degree. to 55.degree. around the X-axis.

REFERENCES:
patent: 2081405 (1937-05-01), Mason
patent: 3601639 (1971-08-01), Hannon
patent: 3944862 (1976-03-01), Shimoi
patent: 3969640 (1976-07-01), Staudte
patent: 4035673 (1977-07-01), Ishida et al.
patent: 4173726 (1979-11-01), Hanji
patent: 4178566 (1979-12-01), Kawashima

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