|About this Abstract
||MS&T23: Materials Science & Technology
||Late News Poster Session
||D-21: Designing Novel Dielectric Composites with High Thermal Conductivity via Cold Sintering
||Javier Mena-Garcia, Clive A. Randall
|On-Site Speaker (Planned)
In order to fulfill the demands of more bandwidth in 5G and 6G communication technology, new dielectric substrates that can be cofired into packages and devices that have low dielectric loss and improved thermal conductivity are desired. The motivation for this study is to design of composites with low dielectric loss (tan δ) and high thermal conductivity (κ), while still limiting the electrical conductivity, for microwave applications involving high power and high frequency. This work describes the fabrication of high density electroceramic composites with a model dielectric material for Cold Sintering, namely Sodium Molybdate Na2Mo2O7 (NMO) and a filler with higher thermal conductivity such as hexagonal Boron Nitride (hBN). Physical properties of the composites were characterized as a function of filler volume fraction, temperature and frequency. Understanding of the variation in measured properties is achieved through analyzing the respective transport mechanisms.