ChemInform Abstract: Doping Effect of Sodium on γ-Irradiated Magnesium Oxide.
Abstract
The concentration of one-electron donor centers is shown to increase significantly when γ-irradiated MgO is treated with NaNH2, whereas it decreases when Na doping is performed before γ-irradiation.
ChemInform Abstract
The concentration of one-electron donor centers is shown to increase significantly when γ-irradiated MgO is treated with NaNH2, whereas it decreases when Na doping is performed before γ-irradiation. The changes in the concentration of one-electron donor centers are explained by transfer of electrons trapped at anion vacancies to lattice oxygen atoms in MgO, the concentration of anion vacancies being greater for the pre-irradiated MgO. The electrical conductivity increases with increasing Na content and the thermal activation energy differs on going from the low-to high-temp. region, indicating the existence of two kinds of electron levels. The correlation between electroconductivity, one-electron donor and basicity properties is discussed.
