Intensities of Circular Dichroism and Absorption Bands and the States of d Ions in Absorbing Media: II. Tetrahedrally Coordinated Positions of d Ions

Veremeichik TF

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Intensities of Circular Dichroism and Absorption Bands and the States of d Ions in Absorbing Media: II. Tetrahedrally Coordinated Positions of d Ions

机译：圆二色性和吸收带的强度以及吸收介质中d离子的状态：II。 d离子的四面体坐标

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The factors affecting the band intensity in the circular dichroism (CD) and absorption spectra of tetrahedrally coordinated d ions in an absorbing medium (symmetry selection rules, structural position, and bond covalence) are analyzed. It is shown by the examples of the Cr4+ ion in Ca3Ga2Ge4O14 crystal and the Fe2+ and Fe3+ ions in SiO4 crystal that the symmetry forbDEdenness of the transitions from orbitally degenerate states and the covalence of the d-ion-ligand bond lead to changes in the intensity of the corresponding CD bands in a wDEe range, beginning from zero. It is shown by the example of Ca3Ga2Ge4O14, LiAlGeO4, LiGaGeO4, and LiGaSiO4 crystals activated with Cr4+ ions that the preferred ion localization position corresponds to a higher effective symmetry.

机译：分析了影响吸收介质中圆二色性（CD）的能带强度和四面体配位d离子的吸收光谱的因素（对称选择规则，结构位置和键价）。通过Ca3Ga2Ge4O14晶体中的Cr4 +离子和SiO4晶体中的Fe2 +和Fe3 +离子的例子可以看出，从轨道简并态跃迁的对称bDEdendenness和d-离子-配体键的共价会导致强度的变化。 wDEe范围内从0开始的相应CD波段的百分比。通过用Cr4 +离子活化的Ca3Ga2Ge4O14，LiAlGeO4，LiGaGeO4和LiGaSiO4晶体的实例表明，优选的离子定位位置对应于较高的有效对称性。

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《Crystallography reports》 |2010年第1期|共8页
作者
Veremeichik TF;
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正文语种 eng
中图分类晶体学;
关键词
LANGASITE FAMILY CRYSTALS; STRUCTURAL LOCALIZATION; SPECTRA; GALLOGERMANATE; SPECTROSCOPY; CA3GA2GE4O14; FORSTERITE; RADIATION; CALCIUM; OXDEES;

机译：硅藻土家族晶体;结构局部化;光谱;高锰酸盐;光谱学;CA3GA2GE4O14;镁橄榄石;辐射;钙;氧化物;

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机译：圆二色性和吸收带的强度以及吸收介质中d离子的状态：II。 d离子的四面体坐标
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Intensities of Circular Dichroism and Absorption Bands and the States of d Ions in Absorbing Media: II. Tetrahedrally Coordinated Positions of d Ions

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