The effect of polydispersity on the dielectric properties of composite materials

Author

Spanoudaki, Anna ; Pelster, Rolf

Author_Institution

II Phys. Inst., Koln Univ., Germany

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

469

Lastpage

472

Abstract

We undertake a systematic numerical investigation on how does ε_eff depend on the width of the particle size distribution. We have simulated the effective permittivity of composites consisting of well separated conductive spherical inclusions in an insulating matrix. Results are presented in a broad range of filling factors and size distribution widths. They reveal a sensitive dependence of the dielectric response on the size distribution of the inclusions. The numerical results are compared with well-established theoretical models. We also emphasise on some salient aspects of the simulation method

Keywords

inclusions; particle reinforced composites; particle size; permittivity; conductive spherical inclusions; dielectric constant; dielectric response; effective permittivity; filling factors; insulating matrix; numerical results; particle size distribution; random composite; size distribution widths; theoretical models; Anisotropic magnetoresistance; Ceramics; Composite materials; Dielectric liquids; Dielectric materials; Filling; Magnetic materials; Nonhomogeneous media; Permittivity; Polarization;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics, 2001. ICSD '01. Proceedings of the 2001 IEEE 7th International Conference on

Conference_Location

Eindhoven

Print_ISBN

0-7803-6352-3

Type

conf

DOI

10.1109/ICSD.2001.955695

Filename

955695