Effect of Grain Size on Dielectric Nonlinearity in Model BaTiO3-Based Multilayer Ceramic Capacitors

Fujii, Ichiro; Trolier-McKinstry, Susan; Nies, Craig

doi:10.1111/j.1551-2916.2010.04058.x

Cited by 58 publications

(24 citation statements)

References 20 publications

(30 reference statements)

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“…More details about the Preisach model and the meaning of p irrev and p rev distributions can be found elsewhere . In fact, all the ferroelectric systems are characterized by their particular distributions p irrev and p rev , which can be found by First‐Order Reversal Curves measurements, as demonstrated by many reports in literature …”

Section: Model and Discussionmentioning

confidence: 89%

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O₃ ceramics

et al. 2016

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In the present work, it is shown how the controlled porosity can be exploited to obtain a compromise between a reduced permittivity down to a few hundreds and maintaining a high tunability level as in the dense material, to fulfill requirements for tunable applications. Nb‐doped Pb(Zr,Ti)O3 ceramics with porosity in the range 5%‐30% have been prepared by direct sintering method. X‐ray diffraction analysis and Rietveld refinement indicated a co‐existence of tetragonal and monoclinic phases in the porous ceramics. Dielectric properties revealed a gradual reduction in permittivity when increasing the porosity level, while maintaining low dielectric losses below 3%. The ferroelectric switching behavior is also influenced by the porosity level: a continuous reduction in the saturation and remnant polarization is observed with increasing porosity. The nonlinear dielectric properties of all the investigated ceramics preserve a high level of tunability in comparison with one of the dense material, irrespective of the porosity level, while zero field permittivity was decreased below 1000. An optimum behavior is found for the ceramic sample with 25% porosity, which shows a high tunability, smaller losses, and moderate dielectric constant (ε ~600).

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Section: Model and Discussionmentioning

confidence: 89%

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O₃ ceramics

et al. 2016

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“…In order to gain more insights into the FE-to-RFE transformation, first order reversal curve (FORC) distributions of the BFSTO films are investigated, which is a sensitive method to give reasonable descriptions of hysteresis behaviors 37 . The FORC method is based on the Preisach model 38,39 assuming that a hysteresis loop consists of a set of rectangular loops (termed as “hysterons”) characterized by the positive-switching coercive field α and the negative-switching coercive field β ( β ≤ α , schematically shown in Supplementary Fig. 8).…”

Section: Resultsmentioning

confidence: 99%

“…8). The hysterons have a distribution in regard to α and β , which is the FORC distribution p ( α, β ) 39,40 . In this work, the p ( α, β ) diagrams of the films were derived from a series of FORC loop measurements (Supplementary Figs.…”

Section: Resultsmentioning

confidence: 99%

Giant energy density and high efficiency achieved in bismuth ferrite-based film capacitors via domain engineering

et al. 2018

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Developing high-performance film dielectrics for capacitive energy storage has been a great challenge for modern electrical devices. Despite good results obtained in lead titanate-based dielectrics, lead-free alternatives are strongly desirable due to environmental concerns. Here we demonstrate that giant energy densities of ~70 J cm−3, together with high efficiency as well as excellent cycling and thermal stability, can be achieved in lead-free bismuth ferrite-strontium titanate solid-solution films through domain engineering. It is revealed that the incorporation of strontium titanate transforms the ferroelectric micro-domains of bismuth ferrite into highly-dynamic polar nano-regions, resulting in a ferroelectric to relaxor-ferroelectric transition with concurrently improved energy density and efficiency. Additionally, the introduction of strontium titanate greatly improves the electrical insulation and breakdown strength of the films by suppressing the formation of oxygen vacancies. This work opens up a feasible and propagable route, i.e., domain engineering, to systematically develop new lead-free dielectrics for energy storage.

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“…The FORC polarization based on the Preisach model is a function of the returning field, α, and the instantaneous electric field, β, which can be calculated as

p (α, β) = \frac{1}{2} \frac{{normal∂}^{2} P (α, β)}{\partial α \partial β}

p_{rev} (α, β) = \underset{β \to {normalα}^{-}}{falselim} \frac{1}{2} \frac{\partial P (α, β)}{\partial β}

where p (α,β) and p rev (α) denote the irreversible and reversible FORC distribution, respectively, and ▵α = ▵β = ▵ E . In this work, they are evaluated via the following numerical approximations:

p (α, β) \approx \frac{1}{2} \frac{P (α, β + Δ β) - P false(normalα, italicβ false) - P (α - Δ α, β + Δ β) + P (α - Δ α, β)}{Δ α Δ β}

p_{normalrev} (α, β) \approx \frac{1}{2} P (α, α) - P ()

…”

Section: Resultsmentioning

confidence: 99%

“…where p(a,b) and p rev (a) denote the irreversible and reversible FORC distribution, respectively, and Ma=Mb=ME. In this work, they are evaluated via the following numerical approximations: [58][59][60]…”

Section: Resultsmentioning

confidence: 99%

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Wang

Shen

et al. 2016

J. Am. Ceram. Soc.

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The (1−x)BaTiO3–xBi(Zn2/3Nb1/3)O3 (x = 0.01–0.30) ceramics were synthesized by solid‐state reactions. The solubility limit was determined to be x = 0.20. A systematic structural transition from a tetragonal phase (x ≤ 0.034), to a mixture of tetragonal and rhombohedral phases (0.038 ≤ x ≤ 0.20), and finally to a pseudocubic phase (x ≥ 0.22) at room temperature was identified. Dielectric measurement revealed a ferroelectric (x ≤ 0.04) to relaxor (x ≥ 0.06) transition with permittivity peak broadening and flattening, which was further verified by Raman spectroscopy and differential scanning calorimetry (DSC). Activation energies obtained from the Vogel–Fulcher model displayed an increasing trend from ~0.03 eV for x ~ 0.05, to unusually high values (>0.20 eV) for the compositions with x ≥ 0.15. With the increase in Bi(Zn2/3Nb1/3)O3 content, the polarization hysteresis demonstrated a tendency from high nonlinearity to sublinearity coupled with the reduction in remnant polarization and coervice field. The deconvolution of the irreversible/reversible polarization contribution was enabled by first‐order reversal curve distributions, which indicates that the decreasing polarization nonlinearity with the increase in Bi(Zn2/3Nb1/3)O3 concentration could be related with the change from the ferroelectric domain and domain wall contributions to the weakly coupled relaxor behaviors.

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Effect of Grain Size on Dielectric Nonlinearity in Model BaTiO3-Based Multilayer Ceramic Capacitors

Cited by 58 publications

References 20 publications

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O₃ ceramics

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O₃ ceramics

Giant energy density and high efficiency achieved in bismuth ferrite-based film capacitors via domain engineering

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

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Effect of Grain Size on Dielectric Nonlinearity in Model BaTiO3-Based Multilayer Ceramic Capacitors

Cited by 58 publications

References 20 publications

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O3 ceramics

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O3 ceramics

Giant energy density and high efficiency achieved in bismuth ferrite-based film capacitors via domain engineering

Ferroelectric to Relaxor Transition in BaTiO3–Bi(Zn2/3Nb1/3)O3 Ceramics

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Product

Resources

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Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O₃ ceramics

Porosity‐dependent properties of Nb‐doped Pb(Zr,Ti)O₃ ceramics

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics