【摘要】 本文根据玻璃的半导体性质研究了Na₂O、CuO、CaO、BaO、B₂O₃、SnO₂等氧化物在磷钒酸盐玻璃中对电导率的影响。计算了各种玻璃的电导激活能。 从晶体化学观点出发,对组成与电导性质之间的关系,联系玻璃结构作了说明。参照晶态氧化物的电导机构,我们认为这个理论可引用来解释磷钒酸盐的电导本质。 玻璃的电子电导主要是由钒离子的变价来进行的。若其中有可迁移的阳离子存在,则离子电导将显示它的重要地位。实验中证实,钙离子在较高温度下,也可以移动并成为电导的主要载流子。 按照磷钒酸盐玻璃的电导事变化规律,可使我们知道怎样去控制这类玻璃材料的电导性质,以及怎样去预期获得他种良好导电的玻璃。更多还原

【Abstract】 In the present investigation, the influence of various oxides such as Na₂O, CuO,CaO,BaO, B₂O₃,SnO₂ on the electro-conductivity of phospho-vanadate glass was described, and the values of activation energy of conduction for different glasses were reported.From the view-point of crystal chemistry, the relationships between the composition and the electro-conductivity were explained with the hypothetical structural model of the glass.The authors assumed that the theory with regard to the mechanism of conduction of crystalline oxides might be used to explain the nature of conduction of the phospho-vanadate glass.The electronic conductance of the glass is mainly proceeded through the valence change of vanadium ions. If there are mobile cations in the structure, the ionic conductance would also play an important role. It was demonstrated that at higher temperature the calcium ions were movable and might act es the principal carriers in the conduction of electricity.By applying the rules of the change of the conductivity of phospho-vanadate glass, it is possible for us to know how to control the electro-conductivity of the glass and to obtain different glasses with suitable electro-conductivity.更多还原