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首页> 外文期刊>Physica status solidi, B. Basic research >Studies of the EPR parameters g(i) and A(i) for Co2+ in the octahedral sites of Y3Al5O12 and Y3Ga5O12 crystals
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Studies of the EPR parameters g(i) and A(i) for Co2+ in the octahedral sites of Y3Al5O12 and Y3Ga5O12 crystals

机译：Y3Al5O12和Y3Ga5O12晶体八面体中Co2 +的EPR参数g（i）和A（i）的研究

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摘要

The perturbation formulas of EPR g factors g() g(perpendicular to) and hyperfine structure constants A() A(perpendicular to) for the trigonal octahedral 3d(7) cluster are derived considering not only the configuration interaction effect due to the admixture among ground and excited states, but also the covalency effect due to the admixture between the d electrons of the 3d(7) ion and the p electrons of ligands. In these formulas, the parameters related to both effects and the trigonal field parameters are estimated from the optical spectra and the structural parameters of the studied system. According to these formulas, the EPR parameters g(), g(perpendicular to), A() and A(perpendicular to) for Co2+ in the octahedral sites of Y3Al5O12 and Y3Ga5O12 garnets are satisfactorily explained from the optical spectra and the structure data. The role of the covalency effect is discussed. [References: 28]
机译：不仅考虑到结构相互作用效应，还推导了三角八面体3d（7）簇的EPR g因子g（）g（垂直）和超精细结构常数A（）A（垂直）的摄动公式。不仅是基态和激发态之间的混合，而且还由于3d（7）离子的d电子与配体的p电子之间的混合而产生共价效应。在这些公式中，与效应和三角场参数有关的参数是根据所研究系统的光谱和结构参数估算的。根据这些公式，可以从光谱和结构数据。讨论了共价效应的作用。 [参考：28]

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