Optimization of 1-3 relaxor-PT single-crystal/polymer composites

Xuecang Geng; Timothy A. Ritter; K. Kirk Shung

doi:10.1117/12.350682

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21 June 1999 Optimization of 1-3 relaxor-PT single-crystal/polymer composites

Xuecang Geng, Timothy A. Ritter, K. Kirk Shung

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Proceedings Volume 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering; (1999) https://doi.org/10.1117/12.350682
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

PZN-PT single crystals exhibit an ultra-large longitudinal bar mode coupling coefficient (k₃₃) of approximately 0.94. The thickness mode coupling coefficient (k_t), 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 (k_p) and are elastically soft compared with PZT ceramics. As a result, 1 - 3 single crystal polymer composites exhibit a very large k_p of approximately 0.7 and only moderately enhanced k_t (approximately 0.8) when typical epoxies are used as the matrix material.

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Xuecang Geng, Timothy A. Ritter, and 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); https://doi.org/10.1117/12.350682

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