Dielectric properties of polystyrene–CCTO composite

Amaral, F.; Rubinger, C. P. L.; Henry, F.; Costa, L.C.; Barros‐Timmons, Ana

doi:10.1016/j.jnoncrysol.2008.05.056

Cited by 63 publications

(51 citation statements)

References 15 publications

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“…Additionally, these materials are not piezoelectric. CCTO has been used as filler material for the development of polymer based 0-3 composites, and CCTO-based composites exhibit a high dielectric constant [20][21][22][23][24]. In these composites, ferroelectric-like polymers, such as PVDF and P(VDF-TrFE), have been used as polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Dielectric composites with a high and temperature-independent dielectric constant

et al. 2012

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Dielectric composites made using P(VDF-CTFE) 88/12 mol% as polymer matrix and both micro-sized and nano-sized CaCu 3 Ti 4 O 12 (CCTO) particles as filler are developed. These composites exhibit high dielectric constant with a small dielectric loss. More importantly, it is found that the dielectric constant of these composites is almost independent of temperature from 25 ℃ to 125 ℃. Comparing the composites made using micro-sized CCTO particles, the composites made using nano-sized CCTO particles exhibit a smaller dielectric loss. The dielectric properties of these composites indicate that the nano-sized CCTO particles have a smaller dielectric constant than the micro-sized CCTO particles.

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Section: Introductionmentioning

confidence: 99%

Dielectric composites with a high and temperature-independent dielectric constant

et al. 2012

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“…The estimated minimal mean square errors allow us to conclude that Looyenga's law corresponds to the data. The obtained parameter h, in equation (4) was 1.76, which indicates that the shape of the particles is far from spherical for which h is equal to 3 [12].…”

Section: Numerical Calculation and Analysismentioning

confidence: 92%

“…The particles of all components are assumed encased in an effective medium permittivity equal to the effective permittivity εeff of mixture that we try to find. Another interesting equation has been developed by Looyenga [12], who assumed that by mixing two constituents whose permittivities are such that ε k = ε eff -Δε ff and ε k = ε eff + Δε ff . Generalised Looyenga law may be written in the following form:…”

Section: Classical Mixture Lawsmentioning

confidence: 99%

Dielectric properties of SiCf/SiC composites

El¹,

Bri²,

Foshi³

2018

FME Transaction

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“…[27][28][29] Composites using CCTO have been widely studied. [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] It should be mentioned that, in most of DDCs using nanosized ceramic fillers, the dielectric constant can only reach the value around 50 even for the composites with a volume fraction of filler up to 50 vol.%. 7 It is well known that the high filler content reduces the composite flexibility and results in weak mechanical properties, which can limit its applications.…”

Section: Dielectric-dielectric Compositesmentioning

confidence: 99%

Physical aspects of 0-3 dielectric composites

2015

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0-3 dielectric composites with high dielectric constants have received great interest for various technological applications. Great achievements have been made in the development of high performance of 0-3 composites, which can be classified into dielectricdielectric (DDCs) and conductor-dielectric composites (CDCs). However, predicting the dielectric properties of a composite is still a challenging problem of both theoretical and practical importance. Here, the physical aspects of 0-3 dielectric composites are reviewed. The limitation of current understanding and new developments in the physics of dielectric properties for dielectric composites are discussed. It is indicated that the current models cannot explain well the physical aspects for the dielectric properties of 0-3 dielectric composites. For the CDCs, experimental results show that there is a need to find new equations/models to predict the percolative behavior incorporating more parameters to describe the behavior of these materials. For the DDCs, it is indicated that the dielectric loss of each constituent has to be considered, and that it plays a critical role in the determination of the dielectric response of these types of composites. The differences in the loss of the constituents can result in a higher dielectric constant than both of the constituents combined, which breaks the Wiener limits.

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Dielectric properties of polystyrene–CCTO composite

Cited by 63 publications

References 15 publications

Dielectric composites with a high and temperature-independent dielectric constant

Dielectric composites with a high and temperature-independent dielectric constant

Dielectric properties of SiCf/SiC composites

Physical aspects of 0-3 dielectric composites

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