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Temperature Dependence of the Elastic, Piezoelectric, and Dielectric Constants of Lithium Tantalate and Lithium Niobate

Smith, R. T., Welsh, F. S.·1971·Journal of Applied Physics

Abstract

The elastic, piezoelectric, and dielectric constants, and their temperature dependence within the range 0°–110°C, have been determined for single crystals of lithium tantalate and lithium niobate. For each material, the constants were extracted from a combination of many ultrasonic phase-velocity measurements, the measured resonant and antiresonant frequencies of a single length-extensional bar resonator, and the measured low-frequency capacitances of two thin flat-plate specimens. For lithium tantalate, the normalized first temperature derivatives of the elastic constants range from −0.4 to −6.7×10−4/°C, while the derivatives for the piezoelectric stress constants range from −1.3 to +1.5×10−4/°C. In the case of lithium niobate, the elastic constant temperature derivatives are all on the order of −2×10−4/°C, while the piezoelectric temperature derivatives are all positive in the range 0.8–8.9×10−4/°C. The dielectric or permittivity temperature derivatives are positive for both materials.

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Metadata

Authors
Smith, R. T., & Welsh, F. S.
Venue
Journal of Applied Physics
Published
1971-05-01
Volume
42
Issue
6
Pages
2219-2230
ISSN
  • 0021-8979 (ISSN-L)
  • 1089-7550
OpenAlex
W2122946997
Cited by
722
References
7
FWCI
7.85
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Temperature Dependence of the Elastic, Piezoelectric, and Dielectric Constants of Lithium Tantalate and Lithium Niobate. https://app.cochat.ai/papers/10.1063/1.1660528
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Smith, R. T., & Welsh, F. S. (1971). Temperature Dependence of the Elastic, Piezoelectric, and Dielectric Constants of Lithium Tantalate and Lithium Niobate. Journal of Applied Physics. https://doi.org/10.1063/1.1660528

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