Polymorphic modifications of iron in the thin-film state

The structure of iron in the thin-film state on silicon (planes (100) and (111)) and quartz substrates was studied. The formation of a mixture of the α- and δ-iron phases on silicon plane (111) and the stabilization of the high-temperature δ phase by photon annealing were demonstrated. The orienting effect of plane (100) on the development of the δ → α transition with complete vanishing of the δ-iron phase during annealing was established. The crystallization of thin iron films only in the α modification on an amorphous substrate was shown.