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Self-consistent model for dielectric constant prediction of polymer-ceramic composite

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3 Author(s)
Rao, Y. ; Sch. of Mater. Sci. & Eng., Georgia Inst. of Technol., Atlanta, GA ; Wong, C.P. ; Jianmin Qu

Nano-structure polymer-ceramic composite with high dielectric constant 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 model based on self-consistent effective medium theory (EMT) is proposed. This model can establish the relevant constitutional parameters of polymer-ceramic composite materials such as 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. The simplicity of the model can be exploited for predictions of the properties and design of nano-structure ferroelectric polymer-ceramic composites

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Advanced Packaging Materials: Processes, Properties andInterfaces, 2000. Proceedings. International Symposium on

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