21 June 1999 Optimization of 1-3 relaxor-PT single-crystal/polymer composites
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Abstract
PZN-PT single crystals exhibit an ultra-large longitudinal bar mode coupling coefficient (k33) of approximately 0.94. The thickness mode coupling coefficient (kt), however, is just comparable to soft PZT ceramics. In order to utilize the advantages of single crystals, it is desirable to incorporate them into a 1 - 3 composite structure. The single crystals possess a very large effective radial mode-coupling coefficient (kp) and are elastically soft compared with PZT ceramics. As a result, 1 - 3 single crystal polymer composites exhibit a very large kp of approximately 0.7 and only moderately enhanced kt (approximately 0.8) when typical epoxies are used as the matrix material.
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Xuecang Geng, Xuecang Geng, Timothy A. Ritter, Timothy A. Ritter, K. Kirk Shung, K. Kirk Shung, } "Optimization of 1-3 relaxor-PT single-crystal/polymer composites", Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); doi: 10.1117/12.350682; https://doi.org/10.1117/12.350682
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