The transmission of zinc diarsenide has been measured at а frequency of 26.3 GHz at 300 К. The components of its dielectric constant (permittivity) have been determined in directions parallel and perpendicular to the axis с. The authors have also calculated, within the Drude model, the tensor components of the lattice permittivity $(\epsilon_{\parallel}=13,1\pm0,6$, $\epsilon_{\perp}=11,3\pm0,6$, $\epsilon_{\parallel}/\epsilon_{\perp}=1,10\div1,16)$ and those ofresistivity $[\rho_{\parallel}=(7,5\pm0,5)Ом\cdot см;$ $\rho_{\perp}= ( 52 \pm 4)Ом\cdot см;$ $ \rho_{perp}/\rho_{\parallel}=6,8\div 7,2]$.
Department of Semiconductor Physics
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