Effect of Firing Rates on Electrode Morphology and Electrical Properties of Multilayer Ceramic Capacitors

Samantaray, Malay M.; Kaneda, Kazumi; Dickey, Elizabeth C.; Randall, Clive A.

doi:10.1111/j.1551-2916.2011.04880.x

Cited by 20 publications

(13 citation statements)

References 41 publications

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“…MLCC is made up of a ceramic body, in which alternating layers in parallel of conductive metal electrodes are embedded. In fact, as a kind of important passive component, MLCC is widely used in different electronic devices . However, the field‐induced phase transition and related multiple functions are rarely reported in lead‐based AFE MLCC up to now, to the best of our knowledge.…”

Section: Introductionmentioning

confidence: 95%

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Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

Chen

Sun

et al. 2017

J Am Ceram Soc

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Multifunctional antiferroelectric (Pb0.92−xBa0.05La0.02Dyx)(Zr0.68Sn0.27Ti0.05)O3 multilayer ceramic capacitor (MLCC) was prepared successfully by the tape‐casting method. The MLCC with 10‐thick layers exhibits compact structure, excellent energy‐storage, and strain properties. For energy‐storage performance, the pulsed discharge current reveals that the stored energy can be released in a quite short time of about 600 ns. The maximum discharge energy density was obtained in the sample with x = 0.04 at 300 kV/cm, which was 3.8 J/cm3 calculated by the hysteresis loop and 2.7 J/cm3 by the pulsed discharge current, respectively. Meanwhile, the MLCC possesses large strain property, where the sample with x = 0.04 shows a high field‐induced strain of 0.71% at room temperature. In addition, the temperature dependence of energy‐storage and strain demonstrates that the MLCC has good temperature stability. The results indicate that the multifunctional MLCC can be a promising candidate for the application in energy and sensor fields.

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Section: Introductionmentioning

confidence: 95%

“…In fact, as a kind of important passive component, MLCC is widely used in different electronic devices. [10][11][12][13] However, the field-induced phase transition and related multiple functions are rarely reported in lead-based AFE MLCC up to now, to the best of our knowledge.…”

mentioning

confidence: 99%

Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

Chen

Sun

et al. 2017

J Am Ceram Soc

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“…Consider MLCCs as an example technology; modern components have dielectric layer thicknesses substantially below 1 μm . Two decades ago, the‐state‐of‐the‐art was 10 μm thick layers .…”

Section: Introductionmentioning

confidence: 99%

“…Consider MLCCs as an example technology; modern components have dielectric layer thicknesses substantially below 1 lm. 1,2 Two decades ago, the-state-of-the-art was 10 lm thick layers. 3 This rapid decrease in layer thickness was driven by the technology roadmap where advancing performance goals necessitated increased volumetric capacitance (rather like a capacitor version of Moore's law).…”

Section: Introductionmentioning

confidence: 99%

Scaling Effects in Perovskite Ferroelectrics: Fundamental Limits and Process‐Structure‐Property Relations

et al. 2016

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Ferroelectric materials are well‐suited for a variety of applications because they can offer a combination of high performance and scaled integration. Examples of note include piezoelectrics to transform between electrical and mechanical energies, capacitors used to store charge, electro‐optic devices, and nonvolatile memory storage. Accordingly, they are widely used as sensors, actuators, energy storage, and memory components, ultrasonic devices, and in consumer electronics products. Because these functional properties arise from a noncentrosymmetric crystal structure with spontaneous strain and a permanent electric dipole, the properties depend upon physical and electrical boundary conditions, and consequently, physical dimension. The change in properties with decreasing physical dimension is commonly referred to as a size effect. In thin films, size effects are widely observed, whereas in bulk ceramics, changes in properties from the values of large‐grained specimens is most notable in samples with grain sizes below several micrometers. It is important to note that ferroelectricity typically persists to length scales of about 10 nm, but below this point is often absent. Despite the stability of ferroelectricity for dimensions greater than ~10 nm, the dielectric and piezoelectric coefficients of scaled ferroelectrics are suppressed relative to their bulk counterparts, in some cases by changes up to 80%. The loss of extrinsic contributions (domain and phase boundary motion) to the electromechanical response accounts for much of this suppression. In this article, the current understanding of the underlying mechanisms for this behavior in perovskite ferroelectrics is reviewed. We focus on the intrinsic limits of ferroelectric response, the roles of electrical and mechanical boundary conditions, grain size and thickness effects, and extraneous effects related to processing. In many cases, multiple mechanisms combine to produce the observed scaling effects.

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“…The effect of the heating rate on densification and microstructural evolution has been investigated in conventional sintering, spark plasma sintering (SPS), high‐frequency induction heat sintering and self‐propagating high‐temperature synthesis plus quick pressing . An increase in the heating rate significantly increases the densification rate during SPS.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Fast Firing of Alumina in a Box Furnace

et al. 2012

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Fast firing has been used to produce relatively dense ceramics in periods of time shorter than 5 min. High heat inputs during fast firing originates changes in the internal structure of the ceramic compact. The amount of energy available for sintering increases by the formation of a dense outer layer which controls the heat flux to the interior of the compact. In this paper, a numerical model based on the method of finite volumes was developed to simulate the fast firing process in an alumina compact. The heat transfer inside the ceramic sample was modeled through the whole process in order to predict the density changes induced by the fast furnace's heat transfer and compared to conventional sintering. SubscriptsBound boundary interfaces Conv convection Diff diffusion Fur furnace I index Rad radiation Sur surface Greek letters a thermal diffusivity Dt time increment Dx space increment in coordinate axis x Dy space increment in coordinate axis y Dz space increment in coordinate axis z ɛ emissivity w densification factor q density r Stefan-Boltzmann constant [W m À2 K À4 ] Symbols A area [m 2 ] c p specific heat [J kg À1 K À1 ] h heat transfer coefficient [W m À2 K À1 ] k thermal conductivity [W m À1 K À1 ] Nu Nusselt [-] Pr Prandtl [-] q″ heat flux [W m À2 ] Ra Rayleigh [-] S radiation heat source [W] T temperature [K] V volume [m 3 ]

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Effect of Firing Rates on Electrode Morphology and Electrical Properties of Multilayer Ceramic Capacitors

Cited by 20 publications

References 41 publications

Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

Scaling Effects in Perovskite Ferroelectrics: Fundamental Limits and Process‐Structure‐Property Relations

Numerical Simulation of the Fast Firing of Alumina in a Box Furnace

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