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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Optical basicity analysis of glasses containing trivalent scandium, yttrium, gallium and indium
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Optical basicity analysis of glasses containing trivalent scandium, yttrium, gallium and indium

机译:含三价scan,钇,镓和铟的玻璃的光学碱度分析

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Refractivity data (densities and refractive indices) of the following ternary glasses were used to obtain the molar electronic polarisabity, am, of each glass: Sc_2O_3-Na_2O-SiO_2, Y_2O_3-Na_2O-SiO_2, In_2O_3-Na_2O-SiO_2, Ga_2O_3-M_2O-SiO_2 (where M is ~Li or Na) and Ga_2O_3-MO-SiO_2 (where Mis Ca, Sr or Ba). Subtracting from a_m the total cation polarisabilities, and dividing by the number of oxygen atoms assumed for the formula of the glass, provided values of the oxide (-II) polarisabilty, alpha_(oxide )(-II). In turn, alpha_(oxide )(-II)., being related quantitatively to the optical basicity, A, of the glass, allowed calculation of the basicity moderating parameter, gamma M, for each of the tripositive metal ions: scandium (1-1), yttrium (I'O), gallium (1-4) (these figures to the nearest 0-05). Results obtained for In~(3+) were inconsistent, but an interpolated value of 1-05 was obtained when gamma values for Al~(3+) Sc~(3+), Y~(3+), Ga~(3+), La~(3+) and Lu~(3+) were plotted against cation charge/cation radius. The y values for Sc~(3+), Y~(3+) and In~(3+)' are similar to those of Ca~(2+) (1-00) or Mg~(2+)' (1-15); gamma for Ga~(3+) signifies greater polarising power, close to that of Al~(3+) (gamma _(Al)=1.5A).
机译:使用以下三元玻璃的折射率数据(密度和折射率)来获得每个玻璃的摩尔电子极化率am:Sc_2O_3-Na_2O-SiO_2,Y_2O_3-Na_2O-SiO_2,In_2O_3-Na_2O-SiO_2,Ga_2O_3-M_2O- SiO_2(其中M为〜Li或Na)和Ga_2O_3-MO-SiO_2(其中Ca,Sr或Ba为Mis)。从a_m减去总阳离子极化率,再除以玻璃分子式假定的氧原子数,可得到氧化物(-II)极化率α_(氧化物)(-II)的值。反过来,与玻璃的光学碱度A定量相关的alpha_(oxide)(-II)。允许计算每个三正金属离子的碱度调节参数γM,scan(1- 1),钇(I'O),镓(1-4)(这些数字精确到0-05)。 In〜(3+)的结果不一致,但是当Al〜(3+)Sc〜(3 +),Y〜(3 +),Ga〜(3)的伽马值获得1-05的插值将+),La〜(3+)和Lu〜(3+)对阳离子电荷/阳离子半径作图。 Sc〜(3 +),Y〜(3+)和In〜(3+)'的y值类似于Ca〜(2+)(1-00)或Mg〜(2+)'的y值( 1-15); Ga〜(3+)的γ表示更大的偏振光,接近Al〜(3+)的偏振(γ_(Al)= 1.5A)。

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