Abstract
To reduce the coercive field of Na0.5Bi0.5TiO3, BaTiO3 were added as dopant materials. Then the (1−x)Na0.5Bi0.5TiO3-xBaTiO3 ceramic samples were produced in solid synthetic way. The optimum preparation condition and piezoelectric properties of the samples were investigated. The XRD results show that the fabric transites from rhombohedral to tetragonal gradually with the substitution of the Ba2+. The morphotropic phase boundaries (MPB) exists in the composition range of 0.06<x<0.10. The scanning electron microscopy (SEM) results show that the growth of the crystalline grain is restrained and the dimension of it turns finer. The study also shows that optimum calcined temperature is 900°C with x<0.06 and 950 °C with x⩾0.06. Suitable sinter temperature is 1 170 °C, and maintained time is 2 hours. Samples in the composition range of MPB exhibit the best piezoelectric performance. The test results show that the remanent polarization and the conceive field of the ceramics decease with the dope of Ba2+. In the composition range of MPB, the conceive field exhibits the lowest value.
References
Chen L, Fan HQ, Effects of Excess Barium on the Structure and Electrical Properties of (Ba,Ca)TiO3 Piezoelectric Ceramics with High Mechanical Quality Factors[J]. J. Wuhan Univ. Technol.-Mater. Sci. Ed., 2018, 33(5): 1 039–1 045
Zhou D, Zhou YH, Tian Y, et al. Structure and Piezoelectric Properties of Lead-free Na0.5Bi0.5TiO3 Nanofibers Synthesized by Electrospinning[J]. J. Mater. Sci. Technol., 2015, 31: 1 181–1 185
Zheng QF, Li Q, Xue SD, Pressure Driven Structural Evolutions of 0.935(Na0.5Bi0.5)TiO3-0.065BaTiO3 Lead-free Ferroelectric Single Crystal through Raman Spectroscopy[J]. Chin. Phys. Lett., 2021, 38(2): 026 102
Fu HX, Cohen RE. Polarization Rotation Mechanism for Ultrahigh Electromechanical Response in Single-crystal Piezoelectrics[J]. Nature, 2000, 403: 281–283
Lee MH, Kim DJ, Park JS, et al. High-performance Lead-free Piezoceramics with High Curie Temperatures[J]. Adv. Mater., 2015, 27: 6 976–6 982
Hu D, Pan ZB, Zhang X, et al. Greatly Enhanced Discharge Energy Density and Efficiency of Novel Relaxation Ferroelectric BNT-BKT-based Ceramics[J]. J. Mater. Chem. C, 2020, 8: 591–601
Hu D, Pan ZB, He ZY, et al. Significantly Improved Recoverable Energy Density and Ultrafast Discharge Rate of Na0.5Bi0.5TiO3-based Ceramics[J]. Ceram. Int., 2020, 46: 15 364–15 371
Ding J, Pan ZB, Chen PX, et al. Enhanced Energy Storage Capability of (1−x)Na0.5Bi0.5TiO3-xSr0.7Bi0.2TiO3 Free-lead Relaxor Ferroelectric Thin Films[J]. Ceram. Int., 2020, 46: 14 816–14 821
Shrout TR, Zhang SJ, Lead-Free Piezoelectric Ceramics: Alternatives for PZT[J]. J. Electroceram., 2007, 19(1): 113–126
Chen L, Fan H, Zhang M, et al., Phase Structure, Microstructure and Piezoelectric Properties of Perovskite (K0.5Na0.5)0.95 Li0.05NbO3-Bi0.5(K0.15Na0.85)0.5TiO3 Lead-free Ceramics[J]. J. Alloy. Compd., 2010, 492(1): 313–319
Wu L, Ning H, Preparation and Piezoelectric Properties of CuO-added (Ag0.75Li0.1Na0.1K0.05)NbO3 Lead-free Ceramics[J]. J. Wuhan Univ. Technol. -Mater. Sci. Ed., 2015, 30(4): 724–728
Chen Y, Su H, Xue S, et al., Dielectric Properties of Bi4Ti3O12 Ceramics by Impedance Spectroscopic Method[J]. J. Wuhan Univ. Technol. -Mater. Sci. Ed., 2016, 31(5): 977–981
Tran VDN, Ullah A, Dinh TH, et al., Effect of Lanthanum Doping on Ferroelectric and Strain Properties of 0.96Bi1/2(Na0.84K0.16)1/2 TiO-0.04SrTiO Lead-free Ceramics[J]. J. Electron. Mater., 2016, 45(5): 2 639–2 643
Wannasut P, Jaita P, Watcharapasorn A, et al., Electrical Properties of Ternary System Bi0.5(Na0.80 K0.20)0.5TiO3-0.005LiNbO3-BaTiO Lead-free Piezoelectric Ceramics[J]. Integr. Ferroelectr., 2016, 175(1): 1–8
Dai YJ, He SS, Lao X, et al., The Relationship between Phase Structure and Electrical Properties in (1−x)(Bi0.5 Na0.5TiO3Ba0.5 K0.5TiO-Ba-TiO3)-xK0.5Na0.5NbO3 Quaternary Lead-free Piezoelectric Ceramics[J]. J. Am. Ceram. Soc., 2014, 97(4): 1 283–1 287
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Funded by the National Natural Science Foundation of China (No. 61704113), the Shenzhen Science and Technology Program (No. GJHZ20210705141805015), and the Scientific Research Project in School-level (SZIIT2019KJ026)
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Zhang, W., Liu, M. Research of Lead-free Na0.5Bi0.5TiO3-BaTiO3 System Piezoelectric Ceramics. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 38, 325–329 (2023). https://doi.org/10.1007/s11595-023-2701-9
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DOI: https://doi.org/10.1007/s11595-023-2701-9