Evolution of dielectric properties in BaZr Ti1−O3 ceramics: Effect of polar nano-regions

Xu, Qing; Zhan, Di; Liu, Hanxing; Chen, Wen; Huang, Duan‐Ping; Zhang, Feng

doi:10.1016/j.actamat.2013.04.017

Cited by 45 publications

(18 citation statements)

References 39 publications

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“…However, no relaxor behavior was observed for any of the prepared ceramics, including BTSn20. The observed peculiarities of the temperature-dependent are in good agreement with the literature 8 .…”

Section: Resultssupporting

confidence: 92%

“…For normal ferroelectrics such as PbTi 1−x Zr x O 3 (PZT) and BaTiO 3 (BT), the “extrinsic” polarization is usually derived from the rotation of domain and domain-wall motion. However, For relaxors such as Pb(Mg 1/3 Nb 2/3 )O 3 (PMN) 28 and BaTi 1−x Zr x O 3 (BZT) 8 the “extrinsic” polarization is mainly from the contribution of nanometer polar clusters. BTSn15 is located at an intermediate state between “normal” ferroelectric and relaxor.…”

Section: Resultsmentioning

confidence: 99%

“…The tunable dielectric properties of these relaxor ferroelectric ceramics are attributed to the presence of the “extrinsic” polar clusters as well as “intrinsic” lattice phonon polarization. The high dielectric tunability and low dielectric loss under dc electric field in relaxor ferroelectric ceramics is achieved by controlling the size of the polar clusters, which merged into polar nanoregions (PNRs) 8 .…”

Section: Introductionmentioning

confidence: 99%

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Large nonlinear dielectric behavior in BaTi1−xSnxO3

Ren

Liu

Wang

et al. 2017

Sci Rep

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BaTi1−xSnxO3 (BTSn, 0 ≤ x ≤ 0.30) ceramics were prepared by both the conventional sintering (CS) and sparking plasma sintering (SPS). Composition, temperature and grain size dependences of the nonlinear dielectric behaviors were systematically studied. BTSn was found to have especially large tunability (≥90%), which is larger than most other Pb-free systems, and is comparable to Pb-based relaxors. The high dielectric tunability in BTSn is attributed to its specific domain structures. Besides, temperature dependent tunability of BTSn presents a dispersed behavior and the dispersion is enhanced with the increase of Sn4+ concentrations, which is explained by the compositional fluctuation model.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Large nonlinear dielectric behavior in BaTi1−xSnxO3

Ren

Liu

Wang

et al. 2017

Sci Rep

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“…In addition, the values of anharmonic coefficient λ (derived from the anharmonic term in the Helmholtz free energy), are 3.34 × 10 10 , 5.93 × 10 10 , 9.15 × 10 10 , and 1.09 × 10 11 Vm 5 /C 3 for x = 0.16, 0.17, 0.18, and 0.19, respectively. These values are comparable to the results of Bi‐doped SrTiO 3 (~6.0 × 10 10 Vm 5 /C 3 ) and BaZr 0.2 Ti 0.8 O 3 (4.5 × 10 10 Vm 5 /C 3 ) . The coefficient λ gradually increases with increasing SrTiO 3 content, indicating that the Ti 4+ ion is favorable for enhancing the λ interaction in the ceramics …”

Section: Resultssupporting

confidence: 83%

Optical and Tunable Dielectric Properties of K_0.5Na_0.5NbO₃–SrTiO₃ Ceramics

et al. 2015

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Pure perovskite K0.5Na0.5NbO3–xSrTiO3 (x = 0.16, 0.17, 0.18, and 0.19) ceramics were prepared by using a solid‐state reaction process. The ceramics were optically transparent for visible and near‐infrared wavelengths. Then, high tunability (24.1%) and low dielectric loss (0.016) for the x = 0.18 sample indicated the transparent ceramics could be used in tunable devices. The Lorentz‐type relation fitting for the temperature dependence of dielectric permittivity showed that these ceramics had a typical relaxor behavior, and the polar nanoregions were related to the tunable dielectric properties. The nonlinear dielectric behavior was further explored by the Johnson model combined with Langevin terms, which revealed that the polar nanoregions contributed to the nonlinear ε(E) dependencies with contributions of 12.3%, 11.6%, 5.9%, and 3.6% for x = 0.16, 0.17, 0.18, and 0.19, respectively.

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“…[16][17][18] The citric acid was dissolved into deionized water and the pH value of the solution was adjusted to 7-9 using ammonia solution. Then the C 16 4 1 5H 2 O, and LiNO 3 , were then added and stirred at 80°C to form a semitransparent precursor solution.…”

Section: Experimental Methodsmentioning

confidence: 99%

Enhancing pyroelectric properties of Li-doped (Ba_0.85Ca_0.15)(Zr_0.1Ti_0.9)O₃lead-free ceramics by optimizing calcination temperature

Liu

Chen

et al. 2015

Jpn. J. Appl. Phys.

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The 1 wt % Li-doped (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 (BCZT-Li) ceramics were prepared by a citrate method. The effects of calcination temperature on the structure and pyroelectric properties of the BCZT-Li ceramics were investigated. The orthorhombic phase and tetragonal phase coexist in all the BCZT-Li ceramics calcined at different temperatures. All the BCZT-Li powders exhibit the type III adsorption-desorption curves. The increase of calcination temperature leads to the growth of the particle size of the BCZT-Li powders. However, the abnormal growth of grains appears when the calcination temperature exceeds 650°C, leading to the deterioration of pyroelectric properties of the BCZT-Li ceramics. The BCZT-Li ceramics calcined at 650°C exhibit the best pyroelectric properties, in which the pyroelectric parameters p, F d , F v , and F i is 860 µC&m %2 &K %1 , 15.8 µPa %1/2 (100 Hz), 0.015 m 2 /C (100 Hz), and 407.6 pm/V, respectively. The excellent pyroelectric properties of the BCZT-Li ceramics calcined at 650°C can be attributed to the polymorphic ferroelectric phase transition occurring around room temperature and the optimized calcination temperature. Such investigations reveal that the BCZT-Li ceramics are promising lead-free materials in the pyroelectric devices.

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Evolution of dielectric properties in BaZr Ti1−O3 ceramics: Effect of polar nano-regions

Cited by 45 publications

References 39 publications

Large nonlinear dielectric behavior in BaTi1−xSnxO3

Large nonlinear dielectric behavior in BaTi1−xSnxO3

Optical and Tunable Dielectric Properties of K_0.5Na_0.5NbO₃–SrTiO₃ Ceramics

Enhancing pyroelectric properties of Li-doped (Ba_0.85Ca_0.15)(Zr_0.1Ti_0.9)O₃lead-free ceramics by optimizing calcination temperature

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Evolution of dielectric properties in BaZr Ti1−O3 ceramics: Effect of polar nano-regions

Cited by 45 publications

References 39 publications

Large nonlinear dielectric behavior in BaTi1−xSnxO3

Large nonlinear dielectric behavior in BaTi1−xSnxO3

Optical and Tunable Dielectric Properties of K0.5Na0.5NbO3–SrTiO3 Ceramics

Enhancing pyroelectric properties of Li-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3lead-free ceramics by optimizing calcination temperature

Contact Info

Product

Resources

About

Optical and Tunable Dielectric Properties of K_0.5Na_0.5NbO₃–SrTiO₃ Ceramics

Enhancing pyroelectric properties of Li-doped (Ba_0.85Ca_0.15)(Zr_0.1Ti_0.9)O₃lead-free ceramics by optimizing calcination temperature