Experimental and theoretical study of the optical properties of FeAl alloy

Optical properties of ordered and disordered FeAl alloy films have been measured in the 0.5 - 5.0 eV energy range. The influence of the order - disorder structural transition on the optical properties of FeAl compounds has been studied. Experimental results for ordered FeAl are compared with the results of ab initio semi-relativistic extended linear augmented-plane-wave calculations, and explained in terms of the electronic energy band structures.