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Title: Piezoelectric coefficients of PMN-0.33PT single crystals
Authors: Cheng, Kei-chun
Chan, Helen L. W.
Choy, Chung-loong
Yin, Qingrui
Luo, Haosu
Yin, Zhiwen
Subjects: Piezoelectric coefficients
Lead magnesium niobate
PMN-PT crystal
Medical ultrasound
Issue Date: 2001
Publisher: IEEE
Source: IEEE ISAF 2000 : proceedings of the 2000 12th IEEE International Symposium on Applications of Ferroelectrics, Honolulu, Hawaii, U.S.A, July 21-August 2, 2000, p. 533-536.
Abstract: Lead magnesium niobate doped with 33 mol% lead titanate (PMN-0.33PT) single crystals have high piezoelectric coefficients (d₃₃ > 2000 pC/N) and thus have good potential to be used as sensors, actuators and transducers for medical ultrasound. PMN-0.33PT crystals of diameter 30 mm and length 40 mm long have been grown. A sample plate with its normal along the [001] axis was cut from the PMN-PT crystal and was poled along the thickness direction. A sinusoidal voltage was applied across the surfaces of the plate and an interferometer was used to measure the induced displacement in the thickness direction to give the piezoelectric coefficient d₃₃. The hydrostatic piezoelectric coefficient d[sub h] was also measured and the d₃₁ coefficient was calculated by d₃₁= (d[sub h]-d₃₃)/2.
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Type: Conference Paper
ISBN: 0-7803-5940-2
Appears in Collections:MRC Conference Papers & Presentations
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