About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advanced Manufacturing of High Temperature Ceramics and Composites: Processing, Characterization and Testing
|
| Presentation Title |
A-13: Comparing the Measured Permittivity with the Mixing Rules of Maxwell-Garnett, Bruggeman, and the Coherent Potential |
| Author(s) |
Sahar Safoura Forouzan, Markus Hainthaler, Raimund Förg, Guenther Ruhl |
| On-Site Speaker (Planned) |
Sahar Safoura Forouzan |
| Abstract Scope |
According to the literature, the permittivity of a mixture of two solid materials can theoretically be calculated using mixing rules. Nonetheless, there's a noticeable insufficiency in studies on the practical application of these mixing rules.
In this study, the permittivity of two mixtures was measured using a coaxial measurement device. Mixture1 consisted of 95% kaolinite and 5% FeO, while mixture2 consisted of 90% kaolinite and 10% FeO. The results compared with theoretical permittivities calculated using Maxwell Garnett, Bruggeman, and Coherent Potential mixing rules. The comparison was done at 915 MHz and 2.45 GHz. The experiment and theory show slight deviations. These differences likely arise from particle geometry, porosity, or contamination in the material. Further studies with using more FeO percentage and analyzing this difference using a multiphase mixing rule could be helpful for more clarity. |