Preparation and Opto-Electric Properties of Lead-Free 0.96KNNTSx-0.04BNKZ Transparent Piezoelectric Ceramics

Abstract

Abstract: In this study, 0.96(K_0.48Na_0.52)(Nb_0.95-xTa_0.05Sb_x)O₃-0.04Bi_0.5(Na_0.82K_0.18)_0.5ZrO₃ (0.96KNNTS_x-0.04BNKZ, x=0.03, 0.04, 0.06, 0.07) lead-free transparent piezoelectric ceramics were prepared, and the effects of Sb doping levels on their piezoelectric properties and optical transparency were examined. All samples exhibit a perovskite structure. With increasing Sb content, both piezoelectric performance and transparency improve. Notably, at x=0.04, the piezoelectric coefficient reaches 240 pC/N, with an optical transmittance of 31.5% at 780 nm. This study demonstrates that compositional design can achieve enhanced transparency and high piezoelectric performance in KNN-based lead-free ceramics, offering significant potential for applications in optoacoustic imaging and transparent transducers.

Key words: KNN, transparent ceramics, piezoelectric, domain structure, lead-free, compositional tuning

CLC Number:

TM282

WANG Yaqi, FU Dashi, WANG Yanan, QIN Yalin, ZHANG Yongcheng. Preparation and Opto-Electric Properties of Lead-Free 0.96KNNTS_x-0.04BNKZ Transparent Piezoelectric Ceramics[J]. Journal of Synthetic Crystals, 2024, 53(11): 1964-1971.

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Preparation and Opto-Electric Properties of Lead-Free 0.96KNNTS_x-0.04BNKZ Transparent Piezoelectric Ceramics

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