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Frequency dispersions of Lamb waves in [001]c and [011]c polarized lead zinc niobate-lead titanate crystal free infinite plates are studied based on the partial wave theory. Multiple crossings between symmetric and antisymmetric Lamb modes are found only in [001]c polarized crystals, and most of the dispersion relations would exhibit the same rule as that in lead magnesium niobate-lead titanate crystals. It is found that multiple crossings between A0 and S0 modes are directly related to the multivalued quasishear vertical slowness curves. A pair of complex conjugate roots of the wave number in the x3 direction is found in a certain area. Equation of elastic constants is obtained when A0 and S0 modes cross under this condition, which can be conveniently used to judge whether A0 and S0 modes cross for crystals with orthogonal and tetragonal symmetries.
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Keywords:
- dispersion /
- PZN-PT /
- slowness curve /
- mode crossing
[1] Park S E, Shrout T R 1997 J. Appl. Phys. 82 1804
[2] Wang F, Luo L, Zhou D, Zhao X Y, Luo H S 2007 Appl. Phys. Lett. 90 212903
[3] He C J, Jing W P, Wang F F, Zhu K J, Qiu J H 2011 IEEE Trans. Ultrason. Ferroelectr. Freq. Control 58 1127
[4] He C J, Xu F, Wang J M, Liu Y W 2009 Cryst. Res. Technol. 44 211
[5] Wu T T, Chen Y T, Sun J H, Lin S S, Huang T J 2011 Appl. Phys. Lett. 98 171911
[6] Zhang H Y, Sun X L, Cao Y P, Chen X H, Yu J B 2010 Acta Phys. Sin. 59 7111 (in Chinese) [张海燕, 孙修立, 曹亚萍, 陈先华, 于建波 2010 物理学报 59 7111]
[7] Xiang Y X, Deng M X, Xuan F Z, Liu C J 2011 Ultrasonics 51 974
[8] Li Y, Thompson R B 1990 J. Acoust. Soc. Am. 87 1911
[9] Toda K, Motegi K 2000 J. Acoust. Soc. Am. 107 1045
[10] Valier-Brasier T, Potel C, Bruneau M, Gatignol P 2011 J. Appl. Phys. 109 064902
[11] Chen C W, Zhang R, Chen H, Cao W W 2007 Appl. Phys. Lett. 91 102907
[12] Chen C W, Zhang R, Cao W W 2009 J. Phys. D 42 095411
[13] Farnell G W, Adler E L 1972 Phys. Acoust. 9 35
[14] Zhang R, Jiang B, Cao W W 2002 J. Mater. Sci. Lett. 21 1877
[15] Zhang R, Jiang B, Jiang W H, Cao W W 2006 Appl. Phys. Lett. 89 242908
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[1] Park S E, Shrout T R 1997 J. Appl. Phys. 82 1804
[2] Wang F, Luo L, Zhou D, Zhao X Y, Luo H S 2007 Appl. Phys. Lett. 90 212903
[3] He C J, Jing W P, Wang F F, Zhu K J, Qiu J H 2011 IEEE Trans. Ultrason. Ferroelectr. Freq. Control 58 1127
[4] He C J, Xu F, Wang J M, Liu Y W 2009 Cryst. Res. Technol. 44 211
[5] Wu T T, Chen Y T, Sun J H, Lin S S, Huang T J 2011 Appl. Phys. Lett. 98 171911
[6] Zhang H Y, Sun X L, Cao Y P, Chen X H, Yu J B 2010 Acta Phys. Sin. 59 7111 (in Chinese) [张海燕, 孙修立, 曹亚萍, 陈先华, 于建波 2010 物理学报 59 7111]
[7] Xiang Y X, Deng M X, Xuan F Z, Liu C J 2011 Ultrasonics 51 974
[8] Li Y, Thompson R B 1990 J. Acoust. Soc. Am. 87 1911
[9] Toda K, Motegi K 2000 J. Acoust. Soc. Am. 107 1045
[10] Valier-Brasier T, Potel C, Bruneau M, Gatignol P 2011 J. Appl. Phys. 109 064902
[11] Chen C W, Zhang R, Chen H, Cao W W 2007 Appl. Phys. Lett. 91 102907
[12] Chen C W, Zhang R, Cao W W 2009 J. Phys. D 42 095411
[13] Farnell G W, Adler E L 1972 Phys. Acoust. 9 35
[14] Zhang R, Jiang B, Cao W W 2002 J. Mater. Sci. Lett. 21 1877
[15] Zhang R, Jiang B, Jiang W H, Cao W W 2006 Appl. Phys. Lett. 89 242908
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