Effect of different templates on structure evolution and large strain response under a low electric field in &lt;00l&gt;-textured lead-free BNT-based piezoelectric ceramics

Bai, Wangfeng; Xi, Junhua; Zhang, Jun; Shen, Bo; Zhai, Jiwei; Yan, Haixue

doi:10.1016/j.jeurceramsoc.2015.03.016

Cited by 83 publications

(17 citation statements)

References 49 publications

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“…In addition, it is worth noting that the density (5.64 g/cm 3 ) of the textured ceramics shows a slightly decrease when compared with that (5.76 g/cm 3 ) of the random one. This phenomenon could be attributed to the existence of large oriented grains in the textured ceramics, which would hinder the further densification process …”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon could be attributed to the existence of large oriented grains in the textured ceramics, which would hinder the further densification process. 20,[24][25][26] To investigate the influence of texture on dielectric properties of BNKBT12Li ceramics, temperature dependence of the ε r and loss tangent of unpoled/poled random and textured ceramics are measured at 1, 10, and 100 kHz, respectively, as shown in Figure 2. The samples exhibit obvious frequency dispersion from RT to 150°C, revealing the nature of relaxor state for BNKBT12Li ceramics.…”

Section: Resultsmentioning

confidence: 99%

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Giant electro‐strain in textured Li⁺‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Liu

et al. 2019

J Am Ceram Soc

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Texturing is an effective approach to improving the piezoelectricity of piezoelectric ceramics. In this work, <001> textured Li+‐doped 0.852Bi0.5Na0.5TiO3–0.11Bi0.5K0.5TiO3–0.038BaTiO3 ternary lead‐free piezoelectric ceramics are prepared by the reactive templates grain growth (RTGG) method. X‐ray diffraction (XRD) results demonstrate a high orientation degree of 77% along the <001> direction. Outstanding electro‐strain response, which is higher than most of reported BNT‐based textured ceramics, is achieved due to the contribution of oriented‐grains along the <001> direction. A large electro‐strain of 0.55% with a relatively low hysteresis is obtained at 6.5 kV/mm with corresponding large signal piezoelectric coefficient (d33∗) of 846 pm/V in the textured ceramics, which is 49% higher than that of the random ceramics. Besides, the electro‐strain could reach as high as 0.52%@5.5 kV/mm (d33∗ = 945 pm/V) at 100°C. These results indicate that the RTGG is an effective way to design high performance lead‐free piezoelectric materials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Giant electro‐strain in textured Li⁺‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Liu

et al. 2019

J Am Ceram Soc

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“…A similar behavior could also be observed in other crystallographically textured ceramics when templates with different chemical compositions were used. 27,28 This was often related to mismatch of lattice parameters, causing stresses between templates and matrix grains. However, according to finite element method simulations, the maximum local stresses due to templates in the matrix are only up to 8 MPa in a PMN-PT ceramic with SrTiO 3 templates.…”

Section: Microstructural and Crystallographic Analysismentioning

confidence: 99%

Effect of degree of crystallographic texture on ferro‐ and piezoelectric properties of Ba_0.85Ca_0.15TiO₃ piezoceramics

et al. 2017

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Crystallographic texturing is a promising approach to reduce the performance gap between randomly oriented polycrystalline piezoelectrics and perfectly oriented single crystals. Here, the influence of the degree of crystallographic texture on the electromechanical properties and their temperature stability of the lead‐free perovskite ferroelectric Ba0.85Ca0.15TiO3 is investigated. Samples with a broad range of (100),(001) crystallographic texture (Lotgering factor 26%‐83%) were prepared by the reactive templated grain growth method. Crystallographic and microstructural analysis have been carried out using X‐ray diffraction and scanning electron microscopy, while the temperature‐dependent electromechanical properties were characterized by dielectric, piezoelectric, polarization, and strain measurements. It was revealed that the total bipolar strain and the coercive field are linearly dependent on the Lotgering factor. The total bipolar strain increased by 80%, whereas the coercive field decreased by 18% due to crystallographic texturing. Likewise, the temperature stability of the electromechanical properties of the samples was found to be dependent on the degree of texture. A sample with a high degree of texture exhibited a Curie temperature of 117°C, which is 21% higher compared to a counterpart with a low degree of texture. This was related to chemical inhomogeneity and a modified internal mechanical stress state.

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“…10 Moreover, <001>-textured 67.5PMN-32.5PT piezoelectric ceramics were synthesized using BT templates for application to magnetic field sensors. [14][15][16][17][18][19][20] According to previous works, all textured lead-based piezoelectric ceramics are PMN-based ceramics; textured piezoelectric ceramics, which do not contain a PMN relaxor, have not been reported. 12,13 In addition, the TGG process was also used for the synthesis of high performance lead-free piezoelectric ceramics such as (Bi 1-x Na x )TiO 3 and (K 1-x Na x )NbO 3 ceramics.…”

Section: Introductionmentioning

confidence: 99%

Structural and piezoelectric properties of <001> textured PZT‐PZNN piezoelectric ceramics

Lee

Park

et al. 2017

J Am Ceram Soc

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Rhombohedral 0.69Pb(Zr0.47Ti0.53)‐0.31Pb(Zn0.6Ni0.4)NbO3 (PZT‐PZNN) ceramics were textured using 10.0 vol. % BaTiO3 (BT) platelets along the <001> direction at 950°C with a high Lotgering factor of 95.3%. BT platelets did not react with the PZT‐PZNN ceramics, and the textured PZT‐PZNN ceramic had a tetragonal structure. The PZT‐PZNN ceramics exhibited a strain of 0.174% with a piezoelectric strain constant (d*33) of 580 pC/N at 3.0 kV/mm. The textured PZT‐PZNN ceramic showed an increased strain of 0.276% and d*33 of 920 pC/N at 3.0 kV/mm, which can be explained by the domain rotation. However, the d33 values of the textured specimens are smaller than those of the untextured specimens because of the small remanent polarization and relative dielectric constant of BT platelets. The textured PZT‐PZNN ceramic synthesized in this work can be used for piezoelectric multilayer actuators because of its large strain and low sintering temperature.

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Effect of different templates on structure evolution and large strain response under a low electric field in <00l>-textured lead-free BNT-based piezoelectric ceramics

Cited by 83 publications

References 49 publications

Giant electro‐strain in textured Li⁺‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Giant electro‐strain in textured Li⁺‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Effect of degree of crystallographic texture on ferro‐ and piezoelectric properties of Ba_0.85Ca_0.15TiO₃ piezoceramics

Structural and piezoelectric properties of <001> textured PZT‐PZNN piezoelectric ceramics

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Effect of different templates on structure evolution and large strain response under a low electric field in <00l>-textured lead-free BNT-based piezoelectric ceramics

Cited by 83 publications

References 49 publications

Giant electro‐strain in textured Li+‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Giant electro‐strain in textured Li+‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Effect of degree of crystallographic texture on ferro‐ and piezoelectric properties of Ba0.85Ca0.15TiO3 piezoceramics

Structural and piezoelectric properties of <001> textured PZT‐PZNN piezoelectric ceramics

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Giant electro‐strain in textured Li⁺‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Giant electro‐strain in textured Li⁺‐doped 0.852BNT–0.11BKT–0.038BT ternary lead‐free piezoelectric ceramics

Effect of degree of crystallographic texture on ferro‐ and piezoelectric properties of Ba_0.85Ca_0.15TiO₃ piezoceramics