| Gamma-ray Shielding Characteristics and Electrical
Properties of Na2O Doped Zinc-Boro-Vanadate Glasses |
Ashwini Devidas, Talari Sankarappa,* Amarkumar Malge and Mohansingh Heerasingh
Pages : 97-104
DOI : 10.1080/0371750X.2023.2175040
|
| Abstract |
| A set of glasses of composition (ZnO)0.3-(V2O5
)0.6–x-(B2O3
)0.1-(Na2O)x
with x = 0.1, 0.15,
0.2 and 0.3 were prepared and their non-crystallinity were confirmed. Density and
molar volume were found to decrease with increasing Na2O concentration. Using
Phy-X/PSD and XCOM softwares, radiation-shielding efficiency was determined by
estimating mass attenuation coefficient, linear attenuation coefficient, effective atomic
number, half value layer, tenth value layer and mean free path of glasses for gamma
energy from 0.005 to 15 MeV. Obtained shielding parameters led to propose the glasses
for ?-ray shielding at lower energy regime. Conductivity variation with temperature
was analyzed using Mott’s small polaron hopping model and activation energy was
determined. It was found to decrease with increasing Na2O content both at high and
low temperature. The density of states at Fermi level was determined using Mott’s
and Greave’s variable range hopping (VRH) models at low temperature.
[Keywords: Vanadate glasses, ?-ray shielding, Density, Conductivity] |
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