Crystallographic engineering in high-performance piezoelectric crystals

Seung Eek Eagle Park; Satoshi Wada; Paul W. Rehrig; Shifang Liu; Leslie Eric Cross; Thomas R. Shrout

doi:10.1117/12.352781

12 July 1999 Crystallographic engineering in high-performance piezoelectric crystals

Seung Eek Eagle Park, Satoshi Wada, Paul W. Rehrig, Shifang Liu, Leslie Eric Cross, Thomas R. Shrout

Proceedings Volume 3675, Smart Structures and Materials 1999: Smart Materials Technologies; (1999) https://doi.org/10.1117/12.352781
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

Crystallographic engineering, a concept to utilize crystal anisotropy as well as an engineered domain configuration, resulted in significant enhancement in piezoelectric activity for normal ferroelectric BaTiO₃ crystals. Electromechanical couplings (k₃₃) approximately 85 percent and piezoelectric coefficients (d₃₃) as high as 500 pC/N, higher or comparable to those of lead based ceramics such as PZT and significantly larger than those of tetragonal BaTiO₃ crystals, were detected from crystallographically engineered orthorhombic BaTiO₃ crystals. Orthorhombic BaTiO₃ phase could be stabilized by Zr-doping at room temperature and enhanced electromechanical coupling (k₃₃) approximately 75 percent was detected also by using crystallographic engineering. Macroscopic symmetry was suggested for <001> poled rhombohedral (3m) and orthorhombic (2mm) crystals, based on the engineered domain configuration.

Citation Download Citation

Seung Eek Eagle Park, Satoshi Wada, Paul W. Rehrig, Shifang Liu, Leslie Eric Cross, and Thomas R. Shrout "Crystallographic engineering in high-performance piezoelectric crystals", Proc. SPIE 3675, Smart Structures and Materials 1999: Smart Materials Technologies, (12 July 1999); https://doi.org/10.1117/12.352781

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