Autoepitaxy and the main orientational relations at crystallization out of amorphous state in Cr-O and V-O films

Abstract

Studied have been the joining characteristics of crystals growing in amophous films of stoichiometric Cr₂0₃ and V₂0₃ under annealing. The films were deposited by laser sputtering of chromium and vanadium targets in oxygen atmosphere. The annealing of films was performed using electron beam in the column of an electron microscope. Using the transmission electron-diffraction and electron microscopy methods, the main morphological types of Cr₂0₃ and V₂0₃ nanocrystals were determined as well as the nanocrystal evolution in the course of growth. Orientation relations have been established for conjunction of crystals of different morphological types as a result of autoepitaxial growth out of amorphous phase as well as at a random contacts thereof.