Improved ferroelectric and piezoelectric properties of (Na0.5K0.5)NbO3 ceramics via sintering in low oxygen partial pressure atmosphere and adding LiF

Bing-Yu Li; Xiao-Ming Chen; Mei-Dan Liu; Zi-De Yu; Han-Li Lian; Jian-Ping Zhou

doi:10.1142/S2010135X21500120

[1] H. Tao, H. Wu, Y. Liu, Y. Zhang, J. Wu, F. Li, X. Lyu, C. Zhao, D. Xiao, J. Zhu, S. J. Pennycook. Ultrahigh performance in lead-free piezoceramics utilizing a relaxor slush polar state with multiphase coexistence. J. Am. Chem. Soc., 141, 13987(2019).

[2] B. Wu, J. Ma, Q. Gou, W. Wu, M. Chen. Enhanced temperature stability in the O-T phase boundary of (K,Na)NbO3-based ceramics. J. Am. Ceram. Soc., 103, 1698(2019).

[3] A. Khesro, D. Wang, F. Hussain, R. Muhammad, G. Wang, A. Feteira, I. M. Reaney. Temperature dependent piezoelectric properties of lead-free (1–x)K0.6Na0.4NbO3–xBiFeO3 ceramics. Front. Mater., 7, 140(2020).

[4] D. Wang, F. Hussain, A. Khesro, A. Feteira, Y. Tian, Q. Zhao, I. M. Reaney. Composition and temperature dependence of structure and piezoelectricity in (1–x)(K1−yNay)NbO3–x(Bi1/2Na1/2)ZrO3 lead-free ceramics. J. Am. Ceram. Soc., 100, 627(2017).

[5] T. Zheng, J. Wu, D. Xiao, J. Zhu. Giant d33 in nonstoichiometric (K,Na)NbO3-based lead-free ceramics. Scr. Mater., 94, 25(2015).

[6] J. Wu, D. Xiao, J. Zhu. Potassium-sodium niobate lead-free piezoelectric materials: Past, present, and future of phase boundaries. Chem. Rev., 115, 2559(2015).

[7] C. Liu, P. Liu, K. Kobayashi, W. G. Qu, C. A. Randall. Enhancement of piezoelectric performance of lead-free NKN-based ceramics via a high-performance flux-NaF-Nb2O5. J. Am. Ceram. Soc., 96, 3120(2013).

[8] X. Lv, J. Wu, X.-X. Zhang. Reduced degree of phase coexistence in KNN-based ceramics by competing additives. J. Eur. Ceram. Soc., 40, 2945(2020).

[9] H. S. Huang, X. M. Chen, J. B. Lu, H. L. Lian. Ferroelectric and dielectric properties of KF-added (K0.48Na0.52)NbO3 lead-free ceramics. Phys. B: Condens. Matter., 564, 28(2019).

[10] Z. Shen, D. Grüner, M. Eriksson, L. M. Belova, C.-W. Nan, H. Yan. Ordered coalescence of nano-crystals in alkaline niobate ceramics with high remanent polarization. J. Materiomics, 3, 267(2017).

[11] G. Ye, J. Wade-Zhu, J. Zou, T. Zhang, T. W. Button, J. Binner. Microstructures, piezoelectric properties and energy harvesting performance of undoped (K0.5Na0.5)NbO3 lead-free ceramics fabricated via two-step sintering. J. Eur. Ceram. Soc., 40, 2977(2020).

[12] Y. L. Su, X. M. Chen, Z. D. Yu, H. L. Lian, D. D. Zheng, J. H. Peng. Comparative study on microstructure and electrical properties of (K0.5Na0.5)NbO3 lead-free ceramics prepared via two different sintering methods. J. Mater. Sci., 52, 2934(2017).

[13] Z. D. Yu, X. M. Chen, Y. L. Su, H. L. Lian, J. B. Lu, J. P. Zhou, P. Liu. Hot-press sintering K0.5Na0.5NbO3-0.5mol%Al2O3 ceramics with enhanced ferroelectric and piezoelectric properties. J. Mater. Sci., 54, 13457(2019).

[14] T. Reimann, S. Fröhlich, A. Bochmann, A. Kynast, M. Töpfer, E. Hennig, J. Töpfer. Low pO2 sintering and reoxidation of lead-free KNNLT piezoceramic laminates. J. Eur. Ceram. Soc., 41, 344(2021).

[15] B. Malič, J. Koruza, J. Hreščak, J. Bernard, K. Wang, J. Fisher, A. Benčan. Sintering of lead-free piezoelectric sodium potassium niobate ceramics. Mater., 8, 8117(2015).

[16] J. G. Fisher, D. Rout, K.-S. Moon, S.-J. L. Kang. High-temperature X-ray diffraction and Raman spectroscopy study of (K0.5Na0.5)NbO3 ceramics sintered in oxidizing and reducing atmospheres. Mater. Chem. Phys., 120, 263(2010).

[17] K. Kobayashi, Y. Doshida, Y. Mizuno, C. A. Randall, D. Damjanovic. A route forwards to narrow the performance gap between PZT and lead-free piezoelectric ceramic with low oxygen partial pressure processed (Na0.5K0.5)NbO3. J. Am. Ceram. Soc., 95, 2928(2012).

[18] Z. Cen, X. Wang, Y. Huan, Y. Zhen, W. Feng, L. Li. Defect engineering on phase structure and temperature stability of KNN-based ceramics sintered in different atmospheres. J. Am. Ceram. Soc., 101, 3032(2018).

[19] Z. D. Yu, X. M. Chen, H. L. Lian, Q. Zhang, W. X. Wu. Microstructure and electrical properties of K0.5Na0.5NbO3 lead-free piezoelectric ceramics sintered in low pO2 atmosphere. J. Mater. Sci: Mater. Electron., 29, 19043(2018).

[20] R. Marder, R. Chaim, G. Chevallier, C. Estournès. Effect of 1wt% LiF additive on the densification of nanocrystalline Y2O3 ceramics by spark plasma sintering. J. Eur. Ceram. Soc., 31, 1057(2011).

[21] R. D. Shannon. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Cryst. Sec. A, 32, 751(1976).

[22] D. Wang, Z. Fan, W. Li, D. Zhou, A. Feteira, G. Wang, S. Murakami, S. Sun, Q. Zhao, X. Tan, I. M. Reaney. High energy storage density and large strain in Bi(Zn2/3Nb1/3)O3-doped BiFeO3-BaTiO3 ceramics. ACS Appl. Energy Mater., 1, 4403(2018).

[23] L.-N. Liu, X.-M. Chen, R.-Y. Jing, H.-L. Lian, W.-W. Wu, Y.-P. Mou, P. Liu. Electrical and photoluminescence properties of (Bi0.5−x/0.94Erx/0.94Na0.5)0.94Ba0.06TiO3 lead-free ceramics. J. Mater. Sci.: Mater. Electron., 30, 5233(2019).

[24] J. G. Fisher, A. Benčan, J. Bernard, J. Holc, M. Kosec, S. Vernay, D. Rytz. Growth of (Na,K,Li)(Nb, Ta)O3 single crystals by solid state crystal growth. J. Eur. Ceram. Soc., 27, 4103(2007).

[25] JCPDS-ICDD Card, International centre for diffraction data, (Newtown Square, PA, 2002).

[26] L. Enzhu, H. Kakemoto, S. Wada, T. Tsurumi. Enhancement of Qm by co-doping of Li and Cu to potassium sodium niobate lead-free ceramics. IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 55, 980(2008).

[27] X.-S. Qiao, X.-M. Chen, H.-L. Lian, W.-T. Chen, J.-P. Zhou, P. Liu, S. Zhang. Microstructure and electrical properties of nonstoichiometric 0.94(Na0.5Bi0.5+x)TiO3-0.06BaTiO3 lead-free ceramics. J. Am. Ceram. Soc., 99, 198(2016).

[28] J. D. T. Richard. Defect in Solids(2008).

[29] C.-M. Weng, C.-C. Tsai, J. Sheen, C.-S. Hong, S.-Y. Chu, Z.-Y. Chen, H.-H. Su. Low-temperature-sintered CuF2 -doped NKN ceramics with excellent piezoelectric and dielectric properties. J. Alloys Compd., 698, 1028(2017).

[30] D. Lin, Q. Zheng, K. W. Kwok, C. Xu, C. Yang. Dielectric and piezoelectric properties of MnO2-doped K0.5Na0.5Nb0.92Sb0.08O3 lead-free ceramics. J. Mater. Sci. Mater. Electron., 21, 649(2009).

[31] B. Malic, J. Bernard, A. Bencan, M. Kosec. Influence of zirconia addition on the microstructure of K0.5Na0.5NbO3 ceramics. J. Eur. Ceram. Soc., 28, 1191(2008).

[32] K. Chen, J. Zhou, F. Zhang, X. Zhang, C. Li, L. An, J. R. G. Evans. Screening sintering aids for (K0.5Na0.5)NbO3 ceramics. J. Am. Ceram. Soc., 98, 1698(2015).

[33] R. Zuo, J. Rodel, R. Chen, L. Li. Sintering and electrical properties of lead-free Na0.5K0.5NbO3 piezoelectric ceramics. J. Am. Ceram. Soc., 89, 2010(2006).

[34] A. Safari, E. K. Akdoğan. Piezoelectric and Acoustic Materials for Transducer Applications, 21(2008).