Evolution of piezoelectric response in (1-x)KNbO3-x(Ba0.5Bi0.5)(Nb0.5Zn0.5)O3 ceramics

Cristina Pascual-Gonzalez; Iasmi Sterianou; Antonio Feteira

doi:10.1117/12.2262811

18 May 2017 Evolution of piezoelectric response in (1-x)KNbO₃-x(Ba_0.5Bi_0.5)(Nb_0.5Zn_0.5)O₃ ceramics

Cristina Pascual-Gonzalez, Iasmi Sterianou, Antonio Feteira

Proceedings Volume 10194, Micro- and Nanotechnology Sensors, Systems, and Applications IX; 1019430 (2017) https://doi.org/10.1117/12.2262811
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

Abstract

Dense (1−x)KNbO₃-x(Ba_1/2Bi_1/2)(Zn_1/2Nb_1/2)O₃ (0 ≤ x ≤ 0.25) ceramics were prepared by the solid state reaction method. X-ray diffraction data show the average crystal structure to evolve from orthorhombic at x = 0 to pseudocubic at x = 0.25. Raman spectroscopy suggests the absence of polar order for x ≥ 0.25 ceramics. Polarisation versus electrical field measurements show a continuous decrease in the spontaneous polarisation with increasing x. Electrical-field-induced strain measurements reveal a piezoelectric-to-electrostrictive crossover. An electrostriction coefficient of 0.043 m⁴/C² was measured for x = 0.15.

Citation Download Citation

Cristina Pascual-Gonzalez, Iasmi Sterianou, and Antonio Feteira "Evolution of piezoelectric response in (1-x)KNbO₃-x(Ba_0.5Bi_0.5)(Nb_0.5Zn_0.5)O₃ ceramics", Proc. SPIE 10194, Micro- and Nanotechnology Sensors, Systems, and Applications IX, 1019430 (18 May 2017); https://doi.org/10.1117/12.2262811

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