Measurements of bulk acoustic properties of synthetic α-quartz

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Measurements of bulk acoustic properties of synthetic α-quartz

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A preliminary study of the acoustical physical constants (elastic constant, piezoelectric constant, dielectric constant, and density) of commercially available, synthetic α-quartz has been conducted which involved the accurate measurement of the longitudinal velocities and densities for X-, Y-, and Z-cut specimens. Significant differences in longitudinal velocity exceeding 0.5%, especially along the Z-axis of propagation, were observed between the measured longitudinal velocities and the calculated velocities using the constants published by Mason or Bechmann et al. Research directions into accurately determining all the acoustical physical constants are suggested.

Inspec keywords: bulk acoustic wave devices; acoustic wave velocity; permittivity; quartz; elastic constants

Other keywords: longitudinal densities; acoustical physical constants; bulk acoustic properties; Y-cut specimens; piezoelectric constant; SiO2; synthetic α-quartz; elastic constant; X-cut specimens; longitudinal velocities; dielectric constant; Z-cut specimens

Subjects: Elasticity, elastic constants; Measurement of acoustic variables; Acoustic wave devices; Acoustic properties of solids

References

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      • W.P. Mason . (1950) Properties and uses of quartz crystals, Piezoelectric crystals and their spplication to ultrasonics.
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      • S.N. Baranovskii , V.I. Panov . Effect of uniaxial compression of the piezoelectric modulus of quartz. Sov. Phys. Acoust. , 71 - 72
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      • J. Kushibiki , I. Takanaga , M. Arakawa , T. Sannomiya . Accurate measurements of the acoustical physical constants of LiNbO3and LiTaO3 single crystals. IEEE Trans. , 1315 - 1323
    4. 4)
      • R. Bechmann , A.D. Ballato , T.J. Lukaszek . Higher-order temperature eoefficients of the elastic stiffnesses andcompliances of alpha-quartz. Proc. IRE , 1812 - 1822
    5. 5)
      • James, B.J.: `A new measurement of the basic elastic and dielectric constants of quartz', Proc. 42nd Annu. Freq. Contr. Symp., 1988, p. 146–154.
    6. 6)
      • I. Koga , M. Aruga , Y. Yoshinaka . Theory of plane elastic and piezoelectric constants of quartz. Phys. Rev. , 1467 - 1473
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