Ternary zinc–sodium–phosphate glasses doped with transition metal of the composition Na₂M_xZn_1−xP₂O₇(x = 0, 1, 2 and 5 mol %) (where M = Ni, Cu and Co) were prepared by the traditional quenching method. The ac conductivity measurements at different temperatures for the prepared glasses have been investigated, and the activation energy for dc conduction has been determined in each transition metal doped sample. The results showed that the evolution of the activation energy of the conductivity depends on the nature of the dopant ions. A model based on formal density functional theory concept in which the electrical charge exchanged between the transition-metal cations and the surrounding material surface is proposed. The outcome is a “simplified” formula which allows us to explain the evolution of the ionic dc conductivity activation energy as a function of the doped ion in interaction with the cation and the surface.

掺有过渡金属Na ₂ M _x Zn _{1- x} P ₂ O ₇（x的三元锌-钠-磷酸盐玻璃 ＝ 0、1、2和5mol％）（其中M ＝ Ni，Cu和Co）是通过传统的淬火方法制备的。已经研究了制备的玻璃在不同温度下的交流电导率测量，并且在每个掺杂过渡金属的样品中确定了直流电导通的活化能。结果表明，电导率活化能的演化取决于掺杂离子的性质。提出了一种基于形式密度泛函理论概念的模型，在该模型中，过渡金属阳离子与周围材料表面之间发生了电荷交换。结果是一个“简化的”公式，该公式使我们能够解释离子dc电导率活化能随与阳离子和表面相互作用的掺杂离子的变化。