Electrical and spectroscopic studies on ZnO-As2O3-Sb2O3 glasses doped with Y2O3

Abstract ZnO-As 2 O 3 -Sb 2 O 3 glasses doped with different concentration of Y 2 O 3 were synthesized. The effect of Y 2 O 3 on spectroscopic properties of glasses has been investigated. Dielectric properties have been studied over a wide frequency range within temperature from 30 – 300 0 C. The increase in dielectric constant and loss with increasing of Y 2 O 3 reveals, the increase of ZnO 6 units which enters the glass network by breaking up the As–O–As, Sb–O–As bonds. e' and tan δ are found to be minimum for Y4 glass. AC conductivity of these glasses has been explained on the basis of quantum mechanical tunneling model.