Effective dielectric constant prediction of polymer-ceramic composite based on self-consistent theory

Yang Rao, C. P. Wong, Jianmin Qu, Tom Marinis

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Nano-structure polymer-ceramic composite with high dielectric constant (εr approx. 100) has been developed for embedded capacitor application. This polymer-ceramic system consists of lead magnesium niobate-lead titanate (PMN-PT) ceramic particle and modified high dielectric low viscosity epoxy resin. In order to obtain precise prediction of effective dielectric constant of this composite, a close form prediction model based on self-consistent theory is proposed. The electrical polarization mechanism and interaction between epoxy resin and ceramic filler has been studied. This model can establish the relevant constitutional parameters of polymer-ceramic composite materials such as particle shape, composition, and connectivity that determine the dielectric properties of the composite. This model is simpler, uses fewer parameters and its prediction compares better with experiment (error<10%). The precision and simplicity of the model can be exploited for predictions of the properties and design of nano-structure ferroelectric polymer-ceramic composites. Self-consistent theory has been proved a good tool to predict effective properties of nano-composites.

Original languageEnglish
Pages (from-to)615-618
Number of pages4
JournalProceedings - Electronic Components and Technology Conference
StatePublished - 2000

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