【摘要】 以凝胶法低温制取了由钒到铜七种过渡金属离子均匀掺杂的SiO₂玻璃。根据每种离子在玻璃中的光吸收及玻璃的颜色推断出其在玻璃中所处的配位及离子存在的价态,同时与用其它方法制取的进行了比较,对影响玻璃光吸收的一些因素进行了探讨。也确定了为得到透明玻璃态物质各种离子的最大允许掺杂浓度。更多还原

【Abstract】 Silica glasses, uniformly doped with seven kinds of transition metal ions, from V to Cu etc., were prepared by gel process at low temperature. Coordination and valency state presented of each kind of ion in silica glass were deduced according to the optical absorption spectra of ions and colour of glasses, and these values were compared with those doped silica glasses obtained by other techniques. Some factors affecting the spectra absorption of glasses were discussed. The maximum allowable doping concentration of each kind of ions for obtaining transparent and vitreous materials were also determined.更多还原