Static Dielectric Constant of SiC

Abstract

Using the Lyddane-Sachs-Teller relation, published data, and a simple analysis, we find the static dielectric constant of cubic SiC to be ${\ensuremath{\epsilon}}_{\mathrm{s}}=9.72$. The same method yields ${\ensuremath{\epsilon}}_{\mathrm{s}}(\ensuremath{\perp})=9.66$ and ${\ensuremath{\epsilon}}_{s}(\ensuremath{\parallel})=10.03$ for $6H$ SiC.