Effect of Ag as an impurity on dielectric constant of amorphous As2S3

Abstract

The effect of silver (Ag) as an impurity on the dielectric constant of amorphous arsenic sulphide (As2S3) has been investigated using a simple inductance-capacitance (L-C) circuit. The dielectric constant was found to decrease with increasing concentration of Ag in the amorphous system. The dielectric constant, r(x), depends on the Ag concentration, x, according to the relation, r(x) = 7.44 exp (-0.17x). The decrease in the dielectric constant is explained as being due to the fact that the addition of Ag to the glassy As2S3 leads to a chemical ordering which reduces the polarization of As2S3.




Journal of Applied Science and Technology (JAST) , Vol. 4, Nos. 1 & 2, 1999, pp. 1 – 4