Determination of elastic, piezoelectric, and dielectric properties of Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystals

Jianhua Yin; Bei Jiang; Wenwu Cao

doi:10.1117/12.350681

21 June 1999 Determination of elastic, piezoelectric, and dielectric properties of Pb(Zn_1/3Nb_2/3)O₃-PbTiO₃ single crystals

Jianhua Yin, Bei Jiang, Wenwu Cao

Author Affiliations +

Proceedings Volume 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering; (1999) https://doi.org/10.1117/12.350681
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

We report a set of measured material properties of Pb(Zn_1/3Nb_2/3)O₃-PbTiO₃(PZN-PT) multi-domain single crystals. While deriving these properties, it was assumed that the rhombohedral PZN-PT crystals have 4 mm symmetry when it is poled along the [001] of the original cubic direction. Samples with three pair of faces oriented in [001], [010] and [100] were made for the resonance measurements and additional samples with the orientation of [001], [110] and [110] were made for the ultrasonic measurements. Complete sets of the material constants were obtained for PZT-4.5%PT and PZN- 8%PT. The coupling coefficient k₃₃ is 94% for the PZN- 8%PT and 90% for the PZN-4.5%PT. A piezoelectric constant d₃₃ of 2300pC/N was obtained for the PZN-8%PT sample. These values are very encouraging for designing broadband ultrasonic transducers. Based these measurement results, the directional dependence of phase velocities and electromechanical coupling coefficients were analyzed. The calculations indicate that the coupling coefficient k₃₁ and k₃₃ has a maximum in the [110] and [001], respectively, a result consistent with the direct measurements. Errors in these measurements were also analyzed.

Citation Download Citation

Jianhua Yin, Bei Jiang, and Wenwu Cao "Determination of elastic, piezoelectric, and dielectric properties of Pb(Zn_1/3Nb_2/3)O₃-PbTiO₃ single crystals", Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); https://doi.org/10.1117/12.350681

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