石墨层间距对E_(2g)拉曼活性模及平面内碳—碳原子间力常数的影响

The Effect of the Layer Distance of the Graphite on the Force Cosstant of C-C Atoms within the Plane and Raman Active Model E_(2g)

本文从石墨的层状结构,特殊的化学键和具有拉曼活性的E_(2g)模的振动方式出发,针对高温态和高压态下的Fitzer模型的修正因子,提出了一个x电子微扰模型。

Under the consideration of the layer structure of the graphite, the special chemical bond and the vibrating way of Raman active mode E_(2g). A π-electron perturbation model is proposed for calculating correction factor of Fitzer's model under a high temperature and high presure. The model says that the change of layer distance influences the movement state of π-electron, which then perturbs the force constant between C atoms within the plane.