Preparation and characterization of Zn-modified CaBi4Ti4O15 piezoelectric ceramics with lower sintering temperature

Xi, Jingwen; Xing, Jie; Yuan, Jing; Nie, Rui; Chen, Hao; Zhang, Wen; Chen, Qiang; Zhu, Jianguo

doi:10.1007/s10854-020-03415-6

Cited by 12 publications

(6 citation statements)

References 42 publications

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“…Aside from these factors, reduced point defects like oxygen vacancies together with lower conductivity may destabilize domain structures and then improve the domain wall mobility, thereby enhancing the piezoelectricity for CNCBT ceramics, as reported in soft/hard PZT piezoelectric ceramics [59]. Overall, the enhanced piezoelectric coefficient d33 and a relatively high Curie point Tc for x = 0.12 ceramics, as compared with other reported Aurivillius phase ceramics in the literature [9,11,15,33,[60][61][62][63][64][65][66][67][68][69] (shown in Fig. 8d), make the Na and Ce co-doped CBT ceramics promising materials for high-temperature piezoelectric applications.…”

Section: J U S T a C C E P T E Dmentioning

confidence: 65%

Enhanced piezoelectricity in Na and Ce co-doped CaBi ₄Ti ₄O ₁₅ ceramics for high-temperature applications

Hu¹,

Koval²,

Zhang³

et al. 2023

Journal of Advanced Ceramics

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The Na and Ce co-doped CaBi4Ti4O15 (CBT) Aurivillius ceramics in a Ca1-x(Na0.5Ce0.5)xBi4Ti4O15 (CNCBT, x = 0, 0.03, 0.05, 0.08 and 0.12) system were synthesized by the conventional solid-state sintering method.All compositions show a single-phase orthorhombic (space group A21am) structure at room temperature. The shift of the Curie point Tc towards lower temperatures on doping results from the increased tolerance factor t.The substitution-enhanced ferroelectric performance with large maximum polarization and facilitated domain switching is evidenced by the developed P-E and I-E hysteresis loops. The piezoelectric coefficient d33 (20.5 ± 0.1 pC/N) of the x = 0.12 sample is about four times larger than that of pure CBT. The improved piezoelectric properties can be attributed to the high remnant polarization and relatively high permittivity. In addition, multisized (micron and sub-micron) domain structures were observed in the CNCBT ceramics by piezoelectric response microscopy. The multiple sized ferroelectric domain structure with smaller domains is beneficial to the easy domain switching, enhanced ferroelectric performance and improved piezoelectric properties of the CNCBT ceramics. The designed Aurivillius-phase ferroelectric ceramics with the Curie point around 765 °C and high d33 are suitable for high-temperature piezoelectric applications.

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Section: J U S T a C C E P T E Dmentioning

confidence: 65%

Enhanced piezoelectricity in Na and Ce co-doped CaBi ₄Ti ₄O ₁₅ ceramics for high-temperature applications

Hu¹,

Koval²,

Zhang³

et al. 2023

Journal of Advanced Ceramics

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“…The four fitting components in Ce 3 d XPS spectra of CNCBT ceramic can be observed in Figure 1F: v 1/ μ 1 and v 2/ μ 2. According to the previous studies, the v 1/ μ 1 peaks are indicative of Ce 4+ 3 d , whereas the v 2/ μ 2 peaks with lower bonding energy correspond to Ce 3+ 3 d 22 . The concentration ratio of Ce 4+ and Ce 3+ is obtained by approximately calculating the relative peak's intensity ratio (RIR) between v 1/ μ 1 and v 2/ μ 2, calculated to be 48.8:51.2.…”

Section: Resultsmentioning

confidence: 98%

Deciphering the synergistic action of multiple factors inducing high piezoresponse in CaBi₄Ti₄O₁₅‐based piezoelectric ceramics

Chen,

Xi,

Xing

et al. 2023

J Am Ceram Soc.

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NaBiCe/Sc ions were co‐doped into a pure CaBi4Ti4O15 (CBT) ceramic to investigate the synergistic action of multiple factors that induced a high piezoresponse. In comparison to the undoped CBT ceramic, the NaBiCe/Sc co‐doped CBT solid solution exhibited an enhancement in spontaneous polarization (Ps) attributed to the tilting of the oxygen octahedra, enhanced domain reorientation owing to increased grain size, and improved dielectric breakdown strength as a consequence of reduced porosity. The synergistic action of the aforementioned comprehensive factors resulted in excellent electrical properties of Ca0.6(Na0.5Bi0.5)0.4Bi3.97Ce0.03Ti3.925Sc0.075O15 ceramic: piezoelectric coefficient d33 = 25.0 pC/N, remnant polarization Pr = 9.28 μC/cm2, and coercive field Ec = 76.14 kV/cm. Moreover, a significant high direct current resistivity (ρdc = 1.22 × 107 Ω·cm at 500°C) was achieved, and the corresponding conductance mechanism was analyzed through a synergistic approach that combines ultraviolet–visible diffuse reflectance spectra and density functional theory.

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“…Guo Li et al 11 synthesized highly textured CBT ceramics using a spark plasma sintering technique and obtained enhanced electrical properties ( d 33 = 24.2 pC/N and T C = 788 °C). Jing Xi et al 12 revealed that the sintering temperature of Ca 0.85 (LiCe) 0.075 Bi 4 TiO 15 ceramics decreases to 980 °C by Zn doping, suppressing the formation of oxygen vacancies and improving the resistivity ( ρ = 6.32 × 10 5 Ω cm at 600 °C). Lin Sheng et al 13 demonstrated that the T C of the Nd 3+ /Ce 4+ co-doped CaBi 4 Ti 4 O 15 ceramic increases to 794 °C due to the enhanced structural distortion.…”

Section: Introductionmentioning

confidence: 99%

Decoding intrinsic and extrinsic contributions for high piezoelectricity of CBT-based piezoelectric ceramics

Chen¹,

Xi²,

Tan³

et al. 2023

J. Mater. Chem. C

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Preparation and characterization of Zn-modified CaBi4Ti4O15 piezoelectric ceramics with lower sintering temperature

Cited by 12 publications

References 42 publications

Enhanced piezoelectricity in Na and Ce co-doped CaBi ₄Ti ₄O ₁₅ ceramics for high-temperature applications

Enhanced piezoelectricity in Na and Ce co-doped CaBi ₄Ti ₄O ₁₅ ceramics for high-temperature applications

Deciphering the synergistic action of multiple factors inducing high piezoresponse in CaBi₄Ti₄O₁₅‐based piezoelectric ceramics

Decoding intrinsic and extrinsic contributions for high piezoelectricity of CBT-based piezoelectric ceramics

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Preparation and characterization of Zn-modified CaBi4Ti4O15 piezoelectric ceramics with lower sintering temperature

Cited by 12 publications

References 42 publications

Enhanced piezoelectricity in Na and Ce co-doped CaBi 4Ti 4O 15 ceramics for high-temperature applications

Enhanced piezoelectricity in Na and Ce co-doped CaBi 4Ti 4O 15 ceramics for high-temperature applications

Deciphering the synergistic action of multiple factors inducing high piezoresponse in CaBi4Ti4O15‐based piezoelectric ceramics

Decoding intrinsic and extrinsic contributions for high piezoelectricity of CBT-based piezoelectric ceramics

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Enhanced piezoelectricity in Na and Ce co-doped CaBi ₄Ti ₄O ₁₅ ceramics for high-temperature applications

Enhanced piezoelectricity in Na and Ce co-doped CaBi ₄Ti ₄O ₁₅ ceramics for high-temperature applications

Deciphering the synergistic action of multiple factors inducing high piezoresponse in CaBi₄Ti₄O₁₅‐based piezoelectric ceramics