Acoustic Velocities of Shear Waves in La3Ga5.5Ta0.5O14 Piezoelectric Crystal Using Singular Value Decomposition

    Authors

    M. M. C. Chou;D. C. Malocha

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Ultrason. Ferroelectr. Freq. Control

    Keywords

    SINGLE-CRYSTALS; ELECTROMECHANICAL PROPERTIES; GROWTH; Acoustics; Engineering, Electrical & Electronic

    Abstract

    La3Ga5.5Ta0.5O14 (LGT) is a new piezoelectric material with superior electromechanical properties and high Q.f product. Transverse-wave splitting behavior of LGT was observed in the acoustic velocity measurements. The velocities of the two shear waves propagating in Y-(010) direction are very close and they cannot be separated completely. This has a tremendous influence on determining the correct velocity of the shear modes. It is proposed that the singular value decomposition (SVD) technique can be used to determine the splitting time of two shear modes in Y-plane LGT crystal. Moreover, it also helps to correct the arrival time of the transverse waves. It is believed that the presented approach is efficient and accurate for determining the correct velocities of shear modes in anisotropic media.

    Journal Title

    Ieee Transactions on Ultrasonics Ferroelectrics and Frequency Control

    Volume

    57

    Issue/Number

    8

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    1813

    Last Page

    1817

    WOS Identifier

    WOS:000285874500011

    ISSN

    0885-3010

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