Tb^(3+)离子4f^75d组态能级的电子云扩大效应  

Nephelauxetic Effect of Electronic Cloud for Energy Levels of 4f^(7)5d Configuration of Tb^(3+) in Crystals

作　　者：师进生[1] 曲郸[1] 张思远[2] 

机构地区：[1]莱阳农学院,青岛266109 [2]中国科学院长春应用化学研究所,长春130022

出　　处：《高等学校化学学报》2006年第7期1303-1306,共4页Chemical Journal of Chinese Universities

基　　金：莱阳农学院基金(批准号:630417)资助

摘　　要：研究了电子云扩大效应对Tb3+离子5d能级的影响.利用光谱理论,将电子云扩大效应比率β同Tb3+离子4f75d组态的自旋允许和禁阻跃迁能级的能级差联系起来,通过复杂晶体化学键理论确定了化学键的共价性、相应键体积极化率以及配体离子的有效电荷与β的线性关系,同时得到了对β有影响并与Tb3+离子自身相关的因子.In this paper, the nephelauxetic effect of 5d levels of Tb^3＋ was considered. By using the rare-earth spectroscopy theory, the nephelauxetic effect ratio β was related to the energy difference between the spin-allowed fd and the spin-forbidden states of Tb^3＋ ion. By means of the chemical bond theory of complex crystals, a linear relationship between the nephelauxetic effect ratio β with the covalency, volume polarization of the chemical bond between the Tb^3＋ ion and the nearest anion, and charge presented by the nearest anion was obtained. In addition, a factor exhibiting the effect of Tb^3＋ ion on β was presented.

关 键 词：Tb^3+离子 电子云扩大效应 化学键 共价性 

分 类 号：O541[理学—物理]