Determination of the Effective Ionic Charge of Gallium Arsenide from Direct Measurements of the Dielectric Constant

Abstract

Direct measurements of static and optical dielectric constants have been made on GaAs with a resistivity of 109 ohm cm at room temperature. Values obtained were 0 = 12.5(3) and ∞ = 10.90. An effective ionic charge es* of 0.46e can be deduced from these values.